CN205452361U - Heterojunction solar cell based on plumbous iodine single crystal section of perovskite methylamine - Google Patents
Heterojunction solar cell based on plumbous iodine single crystal section of perovskite methylamine Download PDFInfo
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- CN205452361U CN205452361U CN201521128698.1U CN201521128698U CN205452361U CN 205452361 U CN205452361 U CN 205452361U CN 201521128698 U CN201521128698 U CN 201521128698U CN 205452361 U CN205452361 U CN 205452361U
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Abstract
The utility model provides a heterojunction solar cell based on plumbous iodine single crystal section of perovskite methylamine relates to solar cell technical field. The heterojunction solar cell include: regard as the light absorbing zone with the plumbous iodine single crystal section of perovskite methylamine, two selectivity electric charge contact layers, it is in to laminate respectively the two sides of light absorbing zone is in order to constitute the PN junction to selectivity extraction and the photogenerated charge of collecting the light absorbing zone production, with two conductive glass, respectively with two selectivity electric charge contact layer direct contact to as positive pole and negative pole. The utility model discloses a heterojunction solar cell possesses the light absorption scope of broad, higher electric charge transmission performance, longer electric charge diffusion length and higher crystal quality.
Description
Technical field
This utility model relates to technical field of solar batteries, particularly relates to a kind of heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer.
Background technology
The development of solar-photovoltaic technology is to solve the most serious energy and a kind of effective means of environmental problem.The most wide variety of is monocrystaline silicon solar cell and polysilicon solar cell, and it possesses higher energy conversion efficiency and preferable device stability.In order to reduce the cost of solaode further and expand photovoltaic material scope, people have developed increasing solar cell material and device architecture.Perovskite methylamine lead iodine thin-film solar cells is a kind of based on perovskite methylamine lead iodine polycrystalline light absorbing zone thin film a kind of Novel photovoltaic device of development in recent years, and it possesses the photoelectric properties of multiple excellence, including: suitably direct band gap, 105cm-1The absorption coefficient of light, longer electronics and hole life and electric charge diffusion length.
Although the efficiency of perovskite thin film solaode has been obtained for being obviously improved, reach 20.1%, close to the efficiency of polysilicon.But owing to perovskite methylamine lead iodine polycrystal film light absorption range is narrower so that its photoelectric current is difficult to be effectively improved, and its photo and thermal stability is poor, it is difficult to extensive deposition, have impact on the commercial applications of this battery.And perovskite methylamine lead iodine monocrystal thin films is compared to perovskite methylamine lead iodine polycrystal film, possesses broader light abstraction width, longer electric charge diffusion length and higher crystal mass, be the most also a kind of preferably light absorbing zone type, have bigger advantage simultaneously in terms of stability of material.In addition, the development of solaode and maturation have been design and the productive accumulation rich experience of single crystal battery, and therefore on the basis of perovskite thin film battery and crystal silicon battery, development perovskite methylamine lead iodine monocrystalline film solar cell is easier to realize the compatibility of technology and expansion.At present, not yet there is the relevant report of perovskite methylamine lead iodine monocrystalline film solar cell.
Utility model content
The purpose of this utility model is to provide for the heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer of a kind of wider light abstraction width, high charge transport properties.
Especially, this utility model provides a kind of heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer, including:
Using perovskite methylamine lead iodine single-crystal wafer as the light absorbing zone of described heterojunction solar battery；
Two selectivity charge contact layers, are fitted in the two sides of described light absorbing zone respectively to constitute PN junction, thus selectivity extraction and collect the photogenerated charge that described light absorbing zone produces；With
Two electro-conductive glass, directly contact with two described selectivity charge contact layers respectively, using as the positive pole of described heterojunction solar battery and negative pole.
Alternatively, in two described electro-conductive glass, each electro-conductive glass includes glass carrier and is fitted in the Fluorin doped tin dioxide transparent conductive layer inside described glass carrier.
Alternatively, two described selectivity charge contact layers are respectively electronic selection contact layer and hole selective contact layer.
Alternatively, described electronic selection contact layer is selected from titanium dioxide, titania additive compound, zinc oxide, doped zinc oxide heterocompound, tin ash or tin ash doped compound.
Alternatively, described titania additive compound be yttrium or niobium titania-doped.
Alternatively, described doped zinc oxide heterocompound is aluminium-doped zinc oxide.
Alternatively, described tin ash doped compound is Fluorin doped tin ash.
Alternatively, described hole selective contact layer is selected from nickel oxide, nickel oxide doped compound or material with carbon element.
Alternatively, described nickel oxide doped compound is the nickel oxide of copper doped.
Alternatively, described heterojunction solar battery is formed according to the order stacked on top of described glass carrier, described Fluorin doped tin dioxide transparent conductive layer, described electronic selection contact layer, described perovskite methylamine lead iodine single-crystal wafer, described hole selective contact layer, described Fluorin doped tin dioxide transparent conductive layer and described glass carrier.
Heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer of the present utility model, possesses wider light abstraction width, higher charge transport properties, longer electric charge diffusion length and higher crystal mass.This utility model can provide a kind of heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer of good performance.
According to below in conjunction with the accompanying drawing detailed description to this utility model specific embodiment, those skilled in the art will become more apparent from of the present utility model above-mentioned and other purposes, advantage and feature.
Accompanying drawing explanation
Describe specific embodiments more of the present utility model the most by way of example, and not by way of limitation in detail.Reference identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that what these accompanying drawings were not necessarily drawn to scale.In accompanying drawing:
Fig. 1 is the structural representation of the heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer according to one embodiment of this utility model；
Fig. 2 is the battery structure schematic diagram using carbon electrode as back electrode；
Fig. 3 is using carbon electrode and hole selective contact layer as the battery structure schematic diagram of back electrode.
Detailed description of the invention
Fig. 1 is the structural representation of the heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer 30 according to one embodiment of this utility model.As it is shown in figure 1, described heterojunction solar battery, including:
Using perovskite methylamine lead iodine single-crystal wafer 30 as the light absorbing zone of described heterojunction solar battery；
Two selectivity charge contact layers 20, are fitted in the two sides of described light absorbing zone respectively to constitute PN junction, thus selectivity extraction and collect the photogenerated charge that described light absorbing zone produces；With
Two electro-conductive glass 10, directly contact with two described selectivity charge contact layers 20 respectively, using as the positive pole of described heterojunction solar battery and negative pole.
Heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer 30 of the present utility model, possesses wider light abstraction width, higher charge transport properties, longer electric charge diffusion length and higher crystal mass.This utility model can provide a kind of heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer 30 of good performance.
Seeing Fig. 1, in two described electro-conductive glass 10, each electro-conductive glass 10 includes glass carrier 11 and is fitted in the Fluorin doped tin dioxide transparent conductive layer 12 (FTO) inside described glass carrier 11.Wherein, glass carrier 11 is inner side near the side of described selectivity charge contact layer 20.See Fig. 1, the area of described Fluorin doped tin dioxide transparent conductive layer 12 can be less than the area of described glass carrier 11, described Fluorin doped tin dioxide transparent conductive layer 12 can align with one end of described glass carrier 11, and glass carrier 11 directly can also contact with described selectivity charge contact layer 20.
As it is shown in figure 1, two described selectivity charge contact layers 20 are respectively electronic selection contact layer 22 and hole selective contact layer 21.Wherein, the described Fluorin doped tin dioxide transparent conductive layer 12 of two in two electro-conductive glass 10 contacts with described electronic selection contact layer 22 and described hole selective contact layer 21 respectively.Owing to described Fluorin doped tin dioxide transparent conductive layer 12 has electric action so that described electronic selection contact layer 22 and described hole selective contact layer 21 respectively by electro-conductive glass 10 as the negative pole of heterojunction solar battery and positive pole.
Due to perovskite methylamine lead iodine monocrystal thin films at the aspect such as resistance to elevated temperatures and mechanical strength all far below silicon materials, perovskite methylamine lead iodine is also difficult to ion implanting to obtain doping simultaneously, its serious ion migration existed makes stable auto-dope be difficult to simultaneously, and the technique the most directly applying mechanically crystal silicon solar batteries is obviously difficult to prepare perovskite methylamine lead iodine monocrystalline film solar cell.
Therefore, the present embodiment additionally provides a kind of method preparing heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer 30, including:
Step S1, by Wire EDM perovskite methylamine lead iodine monocrystalline obtain described perovskite methylamine lead iodine single-crystal wafer 30；
Step S2, described perovskite methylamine lead iodine single-crystal wafer 30 carry out surface reconditioning and surface recrystallization to reduce its surface roughness and defect needing after Wire EDM.
Step S3, preparation electronic selection contact layer 22 and hole selective contact layer 21；
Step S4, on two electro-conductive glass 10, deposit described electronic selection contact layer 22 and described hole selective contact layer 21 respectively；
Step S5, sequentially described electronic selection contact layer 22, perovskite methylamine lead iodine single-crystal wafer 30 and hole selective contact layer 21 are stacked, and it is carried out hot-pressing processing form sample；
Step S6, described sample is packaged, to obtain described heterojunction solar battery.
In step sl, perovskite methylamine lead iodine single-crystal wafer 30 has been obtained by Wire EDM perovskite methylamine lead iodine monocrystalline, its thickness is controlled between 20 microns to several millimeters, slice surface roughness can be controlled in 1 microns, cutting speed is about 1mm/min, cutting coolant used can select non-polar solven, such as ethyl acetate, normal hexane, petroleum ether, n-butyl alcohol or toluene.Cutting process is carried out in fume hood.
Line cutting process generally comprises: is first deposited with one layer of gold electrode on perovskite methylamine lead iodine monocrystalline (centimetres size) surface, to improve the electrical contact of perovskite methylamine lead iodine monocrystalline and WEDM, and uses as pulse negative pole.Wire electrode uses molybdenum filament, uses as pulse positive pole.Use ethyl acetate as cutting coolant.Whole cutting process is carried out under ventilation installation and certain nitrogen protection.Then according to this perovskite methylamine lead iodine monocrystalline is fixed in cutting machine sample fixed platform by certain orientation so that wire electrode is parallel with its bigger crystal face.Under the protection and cooling of ethyl acetate, carry out monocrystalline cutting with slower speed.After single cut completes, a surface of required perovskite methylamine lead iodine single-crystal wafer 30 can be exposed.According to the requirement of required perovskite methylamine lead iodine single-crystal wafer 30, use single-chip microcomputer control program trace mobile example platform to desired location, then repeat above-mentioned cutting process.The perovskite methylamine lead iodine single-crystal wafer 30 that final cutting obtains directly drops in the ethyl acetate placed in advance below sample stage, to wash away the floating ash on perovskite methylamine lead iodine single-crystal wafer 30 surface.Perovskite methylamine lead iodine single-crystal wafer 30 is taken out from ethyl acetate, is flat on pan paper, and be maintained in the nitrogen atmosphere of dry flowing and make its natural drying.
In step s 2, described perovskite methylamine lead iodine single-crystal wafer 30 carries out surface reconditioning and surface recrystallization to reduce its surface roughness and defect needing after Wire EDM.The method of surface reconditioning includes that solvent reparation repairs two kinds with hot pressing.
Wherein, solvent reparation selects methylamine as solvent, described perovskite methylamine lead iodine single-crystal wafer 30 surface is exposed to the several seconds in the methylamine atmosphere that methylamine water solution produces, remove methylamine atmosphere, after several minutes, described perovskite methylamine lead iodine single-crystal wafer 30 is placed in hot plate with 100 DEG C of heat treatments about 10 minutes.This process can be repeated several times until the surface of described perovskite methylamine lead iodine single-crystal wafer 30 presents smooth mirror-like.
Hot pressing repair process is for be flat on described perovskite methylamine lead iodine single-crystal wafer 30 on hot press, described perovskite methylamine lead iodine single-crystal wafer about 30 all tiles a strata tetrafluoroethylene as hot pressing cushion, upper and lower for hot press heating platform is disposed as 100 DEG C, initial pressure is set to 0.25MPa, every 5 minutes, pressure is increased 0.05MPa, hot pressing time is 30 minutes, and final pressure is 0.5MPa.This utility model preferably employs solvent restorative procedure.This utility model can be to reduce the roughness on described perovskite methylamine lead iodine single-crystal wafer 30 surface in the way of solvent reparation is combined by employing with hot pressing reparation substantially.
In step s3, preparation electronic selection contact layer 22 and hole selective contact layer 21.
First the preparation of electronic selection contact layer 22 it is by.The described electronic selection contact layer 22 thin film made by the nanoparticulate dispersion of corresponding metal ion solution or synthesis, it includes one or more in titania nanoparticles, titanium dioxide nanoplate, titania additive compound, Zinc oxide nanoparticle, doped zinc oxide heterocompound, tin oxide nano particles and tin ash doped compound.Wherein, titania additive compound can be yttrium or niobium titania-doped.Doped zinc oxide heterocompound can be aluminium-doped zinc oxide.Tin ash doped compound can be Fluorin doped tin ash.
The preparation of titania nanoparticles dispersion liquid.Being slowly added in 2mL ethanol by 0.5mL titanium tetrachloride, this process is carried out in frozen water mixing bath, and keeps lasting stirring.Then 10mL benzyl alcohol it is added thereto to.This mixed solution continuously stirred in frozen water mixing bath, until yellow clear solution.Being sealed in vial by this mixed solution, and transfer in 80 DEG C of baking ovens, heat treated a few hours, until forming HUANGBAI(sic) color cloud liquid.After heating terminates, above-mentioned turbid liquid is transferred in centrifuge tube, and is added thereto to a certain amount of ethyl acetate as precipitant and detergent.By being centrifuged being separated with liquid by solid therein to the turbid liquid in centrifuge tube, its solid being precipitated out is titania nanoparticles.In order to remove impurity and the byproduct of reaction of titania nanoparticles surface attachment, repeatedly can wash and centrifugally operated by ethanol and ethyl acetate.Finally utilize ultrasonic means, titania nanoparticles is directly dispersing in ethanol, the alcohol dispersion liquid of stable titania nanoparticles can be obtained.In order to control the porosity of the titania nanoparticles thin film finally deposited, a certain proportion of ethyl cellulose (EC) can be dissolved in above-mentioned alcohol dispersion liquid.The size of titania nanoparticles can be controlled by controlling the response time.
The preparation of the titania nanoparticles dispersion liquid of doped with yttrium or niobium.A certain amount of titanium tetrachloride is slowly added in 2mL ethanol, dissolves a certain amount of doped source simultaneously, such as Columbium pentachloride. or Yttrium chloride(Y2Cl6).Its subsequent reactions is identical with the course of reaction of titania nanoparticles, does not repeats them here.Finally give the alcohol dispersion liquid of the titania nanoparticles of doping niobium.
The preparation of titanium dioxide nanoplate dispersion liquid.5mL butyl titanate and 0.6mL Fluohydric acid. are joined in the hydrothermal reaction kettle of polytetrafluoroethylmaterial material, and be uniformly mixed.Then hydro-thermal reaction 24 hours in 180 DEG C of convection oven.Reaction obtains solid product after terminating, and is cooled to room temperature, cleans this solid product with ethanol and deionized water as detergent.Solid product after finally cleaning is distributed in ethanol solution, forms the alcohol dispersion liquid of stable titanium dioxide nanoplate.
The preparation of Zinc oxide nanoparticle dispersion liquid.First zinc acetate is dissolved in dimethyl sulfoxide, forms the transparent settled solution of 0.5M, configure the ethanol solution of dimethyl hydrogen amine-oxides simultaneously.The above-mentioned acetic acid zinc solution of high-speed stirred, is then added dropwise over dimethyl hydrogen ammonium hydroxide solution wherein.Mixed solution, more continuously stirred to mixed solution 30 minutes are obtained after having added.It is centrifuged this mixed solution obtaining precipitate.This precipitate is Zinc oxide nanoparticle.Use ethyl acetate and ethanol this Zinc oxide nanoparticle to be cleaned multiple times as detergent, finally cleaned Zinc oxide nanoparticle ultrasonic disperse to ethanol will form the alcohol dispersion liquid of Zinc oxide nanoparticle.
The preparation of tin oxide nano particles dispersion liquid.Butter of tin is joined formation settled solution in benzyl alcohol.Being sealed in vial by this settled solution, and transfer in 80 DEG C of baking ovens, heat treated a few hours, until producing the turbid liquid with white depositions.After heating terminates, above-mentioned turbid liquid is transferred in centrifuge tube, and is added thereto to a certain amount of ethyl acetate as precipitant and detergent.By being centrifuged being separated with liquid by solid therein to the turbid liquid in centrifuge tube, its solid being precipitated out is tin oxide nano particles.In order to remove impurity and the byproduct of reaction of tin oxide nano particles surface attachment, repeatedly can wash and centrifugally operated by ethanol and ethyl acetate.Finally utilize ultrasonic means, tin oxide nano particles is distributed in ethanol, it is thus achieved that the alcohol dispersion liquid of tin oxide nano particles.
It is followed by carrying out the preparation of hole selective contact layer 21.The described hole selective contact layer 21 thin film made by the nanoparticulate dispersion of corresponding metal ion solution or synthesis, it includes one or more in nickel oxide nanoparticle, nickel oxide doped compound and carbon pastes.Nickel oxide doped compound can be the nickel oxide of copper doped.
The preparation of nickel oxide nanoparticle dispersion liquid.A certain amount of Nickel dichloride., carbamide being dissolved and form reaction solution in deionized water, then the state in backflow and high-speed stirred declines 95 DEG C of reactions of above-mentioned reaction solution holding 80 minutes.The nickel hydroxide pressed powder of blueness is obtained through washing and dry run.This blue solid powder is laid in crucible, with 550 DEG C of high-temperature calcinations 2 hours, obtains gray solid powder.This gray solid powder is joined in a certain amount of ethanol, by being stirred vigorously, ultrasonic procedure, stands a few hours the most again, obtain the alcohol dispersion liquid of the stable nickel oxide nanoparticle in upper strata.
The preparation of the nickel oxide nanoparticle dispersion liquid of copper doped.A certain amount of nickel oxide, carbamide are dissolved and forms reaction solution in deionized water, is simultaneously introduced a certain amount of copper chloride.Its subsequent reactions is identical with the course of reaction of nickel oxide nanoparticle, does not repeats them here.Finally give the alcohol dispersion liquid of the nickel oxide nanoparticle of the copper doped of brown.
The preparation of carbon pastes.Graphite flake according to a certain percentage and conductive black are mixed, is then added in polyvinyl acetate vinyl acetate solution, obtains mixed solution.Wherein the mass ratio of material with carbon element is 80%, and the mass ratio of polyvinyl acetate is 20%.By above-mentioned mixed solution high speed ball milling 4 hours, obtain uniform carbon pastes.
In step s 4, on two electro-conductive glass 10, described electronic selection contact layer 22 and described hole selective contact layer 21 are deposited respectively.
Before the deposition firstly the need of electro-conductive glass 10 being carried out conductive layer etching and substrate cleaning.Conductive layer etching uses laser etching method, and optical maser wavelength used by it is 1024nm.Cleaning process is progressively to clean according to liquid detergent, alkaline ethanol solution, the order of deionized water.After having cleaned, the air blow drying being dried is utilized i.e. to obtain required electro-conductive glass 10.
The depositional mode of described electronic selection contact layer 22 and hole selective contact layer 21 is membrane deposition method.Described membrane deposition method is spin coating, spraying or silk screen printing.The present embodiment uses spin coating method carry out the deposition of alcohol dispersion liquid, alcohol dispersion liquid prepared in step 3 is made thin film.With the alcohol dispersion liquid of certain rotating speed spin coating nano-particle on electro-conductive glass 10, then 500 DEG C of heat treatments 30 minutes with obtain thickness as 50nm about comparatively dense oxide skin(coating).In order to increase film surface porosity, to improve the electrical contact of remaining perovskite methylamine lead iodine single-crystal wafer 30 in subsequent process, above-mentioned oxide skin(coating) continues the nano-particle alcohol dispersion liquid that spin coating contains ethyl cellulose, by high temperature sintering, top layer porous, the oxide selectivity charge contact layer 20 of bottom densification finally can be obtained.Described selectivity charge contact layer 20 can become electronic selection contact layer 22 or hole selective contact layer 21 according to the different nano-particle in the alcohol dispersion liquid of its precursor.
The deposition of carbon pastes is different with the deposition of aforementioned alcohol dispersion liquid.By the method for blade coating, described carbon pastes is scratched on microscope slide, at 50 DEG C, it is dried and removes the ethyl acetate solvent in carbon pastes with part, then obtain the C film of self-supporting, be carbon electrode 23.
For the thin film after having deposited, can carry out heat treatment at different temperatures, heat treatment temperature controls at 100 DEG C～500 DEG C.
In step s 5, sequentially described electronic selection contact layer 22, perovskite methylamine lead iodine single-crystal wafer 30 and hole selective contact layer 21 are stacked, and it is carried out hot-pressing processing formation sample.By the perovskite methylamine lead iodine single-crystal wafer 30 crossed through heat treated selectivity charge contact layer 20 and surface reconditioning according to from top to bottom with the order of electro-conductive glass 10, electronic selection contact layer 22, perovskite methylamine lead iodine single-crystal wafer 30, hole selective contact layer 21 and electro-conductive glass 10 stack horizontal at hot press under on heating platform, arranging the upper and lower heating-up temperature of hot press is 115 DEG C, pressure is 0.5MPa, and hot pressing time is 30 minutes.
In step s 6, described sample is packaged, to obtain described heterojunction solar battery.In order to ensure this battery structure and contact can stable existence, while it is carried out hot pressing, it is possible to use PUR 40 by battery synchronize encapsulation.After hot pressing terminates, first terminate heating, after certain time, cancel pressure again.
Below in conjunction with specific embodiments, assembling process and the battery performance of the monocrystalline hetero-junction solar cell of different battery structure are discussed in detail.The battery efficiency that this utility model uses is measured and is used computer-controlled digital sourcemeter (model is Keithley2602) to carry out testing and record.Measure and use four electrode method, the positive pole of voltage source connects on the electro-conductive glass 10 directly contacted with hole selective contact layer 21 in the battery, the negative pole of voltage source connects on the electro-conductive glass 10 directly contacted with electronic selection contact layer 22 in the battery, herewith connected mode, the positive pole of gallon electrode connects on the electro-conductive glass 10 directly contacted with hole selective contact layer 21 in the battery, and the negative pole of gallon electrode connects on the electro-conductive glass 10 directly contacted with electronic selection contact layer 22 in the battery.Light source uses 500W xenon lamp, and incident intensity is 100mW/cm2, illuminating area is 0.1cm2.Except as otherwise noted, the photoelectric properties in each embodiment are measured and are at room temperature carried out.
Embodiment 1
The present embodiment using introduce this utility model based on different oxide nano-films as the assembling of the heterojunction solar battery of the perovskite methylamine lead iodine single-crystal wafer 30 of selectivity charge contact layer 20 and the impact of performance.
Electro-conductive glass 10, selectivity charge contact layer 20 and perovskite methylamine lead iodine single-crystal wafer 30 are formed sandwich structure according to order stacking shown in Fig. 1.In order to obtain stable battery structure, while above layers stacking, one layer of PUR 40 thin film of horizontal between two glass carriers 11.The present embodiment uses hot-press method that each layer is directly contacted, and utilizes the thermoplastic of PUR 40 to make battery structure with packaging effect and contact holding stably.Arranging hot press upper and lower heating platform temperature is 115 DEG C, and pressure is 0.5MPa, and hot pressing time is 30 minutes.Then Temperature fall, cancels pressure after room temperature again.Electronic selection contact layer 22 and hole selective contact layer 21 thickness are about 80nm, porous surface, and perovskite single-crystal wafer thickness is 20 microns.
Battery performance table obtained in this example is shown in Table 1, and what battery efficiency was the highest is using tin oxide nano particles as electronic selection contact layer 22 with using the nickel oxide nanoparticle of copper doped as the battery of hole selective contact layer 21, and its efficiency is 5.5%.Additionally, it is found that the electric conductivity of selectivity charge contact layer 20 can be improved by ion doping from table 1, thus improve fill factor, curve factor and the photoelectric current size of battery.
Table 1
Embodiment 2
Whether the present embodiment have studied and use PUR 40 to be packaged the impact on battery performance in hot pressing, and the impact of its battery performance, its battery performance is shown in Table 2.Visible, if not using PUR 40 to encapsulate, final battery current, voltage and the final efficiency obtained is the lowest, when this is possibly due to not encapsulate, after end hot pressing pressure is cancelled, can not keep good mechanically and electrically contact between battery different layers.Therefore, the hot pressing of the present embodiment synchronizes the battery preparation method of encapsulation to should ensure that battery performance is extremely important.
Table 2
Embodiment 3
This gives the carbon electrode 23 made using the carbon pastes performance characterization as the battery of back electrode.During using carbon electrode 23 as back electrode, need to be equipped with aluminium foil 50 to increase its electric conductivity.Fig. 2 is the battery structure schematic diagram using carbon electrode 23 as back electrode.Hot pressing preparation process for battery shown in Fig. 2 is, will be covered with the electro-conductive glass 10 of tin dioxide thin film layer, perovskite methylamine lead iodine single-crystal wafer 30, carbon electrode 23, aluminium foil 50, electro-conductive glass 10 are flat on hot press table top according to order from top to bottom, tile between upper and lower electro-conductive glass 10 one layer of PUR 40 thin film simultaneously, at 90 DEG C, keep 30 minutes under 0.5MPa hot pressing condition.Hot pressing sequentially cancels thermal source and pressure after completing.Final acquisition battery shown in Fig. 2.
Fig. 3 is using carbon electrode 23 and hole selective contact layer 21 as the battery structure schematic diagram of back electrode.Hot pressing preparation process for battery shown in Fig. 3 is, first, after obtaining carbon electrode 23, spraying means are utilized, the nickel oxide nanoparticle thin film of the copper doped about one layer of 100nm thickness of carbon electrode 23 surface spraying, and carry out hot-pressing processing as procedure described above, final acquisition battery shown in Fig. 3.
It is shown in Table 3 using carbon electrode 23 as the battery performance of back electrode.Wherein, using carbon electrode 23 as back electrode, battery efficiency is 3.2%, and after increasing the nickel oxide nanoparticle thin film of copper doped, battery efficiency can rise to 4.5%.The electric conductivity of selectivity charge contact layer 20 can be improved by ion doping, thus improve the efficiency of battery.
Table 3
So far, those skilled in the art will recognize that, multiple exemplary embodiment of the present utility model is illustrate and described although the most detailed, but, in the case of without departing from this utility model spirit and scope, still can directly determine according to this utility model disclosure or derive other variations or modifications of many meeting this utility model principle.Therefore, scope of the present utility model is it is understood that and regard as covering other variations or modifications all these.
Claims (6)
1. a heterojunction solar battery based on perovskite methylamine lead iodine single-crystal wafer, it is characterised in that including:
Using perovskite methylamine lead iodine single-crystal wafer as the light absorbing zone of described heterojunction solar battery；
Two selectivity charge contact layers, are fitted in the two sides of described light absorbing zone respectively to constitute PN junction, thus selectivity extraction and collect the photogenerated charge that described light absorbing zone produces；With
Two electro-conductive glass, directly contact with two described selectivity charge contact layers respectively, using as the positive pole of described heterojunction solar battery and negative pole.
Heterojunction solar battery the most according to claim 1, it is characterised in that in two described electro-conductive glass, each electro-conductive glass includes glass carrier and is fitted in the Fluorin doped tin dioxide transparent conductive layer inside described glass carrier.
Heterojunction solar battery the most according to claim 2, it is characterised in that two described selectivity charge contact layers are respectively electronic selection contact layer and hole selective contact layer.
Heterojunction solar battery the most according to claim 3, it is characterised in that described electronic selection contact layer is titania-doped selected from titanium dioxide, niobium, zinc oxide, aluminium-doped zinc oxide, tin ash or Fluorin doped tin ash.
Heterojunction solar battery the most according to claim 3, it is characterised in that described hole selective contact layer is selected from nickel oxide or material with carbon element.
6. according to the heterojunction solar battery according to any one of claim 3-5, it is characterized in that, described heterojunction solar battery is formed according to the order stacked on top of described glass carrier, described Fluorin doped tin dioxide transparent conductive layer, described electronic selection contact layer, described perovskite methylamine lead iodine single-crystal wafer, described hole selective contact layer, described Fluorin doped tin dioxide transparent conductive layer and described glass carrier.
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| CN105470395A (en) * | 2015-12-29 | 2016-04-06 | 中国科学院物理研究所 | Heterojunction solar cell based on perovskite methylamine lead iodine monocrystal slice and preparation method for heterojunction solar cell |
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| CN105470395A (en) * | 2015-12-29 | 2016-04-06 | 中国科学院物理研究所 | Heterojunction solar cell based on perovskite methylamine lead iodine monocrystal slice and preparation method for heterojunction solar cell |
| CN105470395B (en) * | 2015-12-29 | 2018-11-09 | 中国科学院物理研究所 | A kind of heterojunction solar battery and preparation method thereof based on perovskite methylamine lead iodine single-crystal wafer |
| CN108023017A (en) * | 2016-11-04 | 2018-05-11 | 中国科学院化学研究所 | A kind of monocrystal thin films of organo-mineral complexing perovskite material and its preparation method and application |
| CN108023017B (en) * | 2016-11-04 | 2019-12-27 | 中国科学院化学研究所 | Single crystal film of organic-inorganic composite perovskite material and preparation method and application thereof |
| WO2018156987A1 (en) * | 2017-02-24 | 2018-08-30 | Epic Battery Inc. | Stable perovskite solar cell |
| US10587221B2 (en) | 2017-04-03 | 2020-03-10 | Epic Battery Inc. | Modular solar battery |
| US11489082B2 (en) | 2019-07-30 | 2022-11-01 | Epic Battery Inc. | Durable solar panels |
| CN110797462A (en) * | 2019-11-06 | 2020-02-14 | 苏州协鑫纳米科技有限公司 | Manufacturing method of perovskite thin sheet and preparation method of single crystal perovskite battery |
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