CN110854270A - Perovskite solar cell with protection structure and preparation method thereof - Google Patents
Perovskite solar cell with protection structure and preparation method thereof Download PDFInfo
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- CN110854270A CN110854270A CN201911049163.8A CN201911049163A CN110854270A CN 110854270 A CN110854270 A CN 110854270A CN 201911049163 A CN201911049163 A CN 201911049163A CN 110854270 A CN110854270 A CN 110854270A
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- layer
- solar cell
- perovskite
- perovskite solar
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- 238000002360 preparation method Methods 0.000 title claims description 11
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims abstract description 54
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 13
- 230000005525 hole transport Effects 0.000 claims description 17
- 239000011521 glass Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 14
- 230000008020 evaporation Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 230000005012 migration Effects 0.000 abstract description 4
- 238000013508 migration Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920000144 PEDOT:PSS Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- -1 halogen ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a perovskite solar cell with a protection structure, which belongs to the field of perovskite solar cells, and compared with the traditional perovskite solar cell, the perovskite solar cell provided by the invention has the advantages that a 20-40nm lithium fluoride layer is evaporated between a perovskite cell electrode and a transmission layer by using an evaporation method so as to achieve the effect of blocking ion migration, so that the risk of damage to the contact interface of the electrode and the transmission layer is reduced, and the stability of a device is further improved.
Description
Technical Field
The invention relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell with a protection structure and a preparation method thereof.
Background
Organic and inorganic hybrid perovskite materials have been receiving more and more attention in recent years due to their low exciton confinement energy, appropriate forbidden band width, long carrier diffusion length, high light absorption coefficient and solution processability. Since 2009, the efficiency of perovskite solar cells has risen from 3.81% to 24.2%, which is almost comparable to that of commercial single crystal silicon solar cells. It is widely believed that perovskite solar cells are the most promising next-generation commercial solar cells, but before commercialization, there are some problems to be solved, especially the stability of perovskite solar cells. The perovskite type solar cell is a promising photovoltaic device, the photoelectric conversion efficiency of which is over 24%, but the thermal instability is one of the key factors that hinder the commercialization thereof.
Active layer AB of conventional perovskite solar cell
X-site halogen ions in the perovskite structure are easy to migrate; second some transport layer materials such as PEDOT: PSS has weak acidity and hygroscopicity, and is easy to damage electrodes in long-term work, so that solving the stability of the electrodes is an important link for improving the stability of the perovskite solar cell.
The Chinese patent application with the publication number of CN108649124A discloses a high-efficiency inorganic perovskite solar cell and a preparation method thereof, wherein the solar cell consists of five parts, namely a bottom electrode, an electron transport layer, an inorganic perovskite material absorption layer, a hole transport layer and a top electrode, two plane heterojunctions are constructed by the electron transport layer, the inorganic perovskite material absorption layer and the hole transport layer, and the electron transport layer, the inorganic perovskite material absorption layer and the hole transport layer are all formed into a film by a solution method. The stability of the resulting perovskite solar cell is not very high.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a perovskite solar cell with a protection structure and a preparation method thereof, wherein a 20-40nm lithium fluoride layer is arranged between a transmission layer and an electrode, so that the migration of ions between the transmission layer and the electrode is greatly reduced, the water oxygen transmission rate can be reduced, and the stability of the perovskite solar cell is further improved.
The technical scheme of the invention is as follows:
a perovskite solar cell with a protection structure is provided, wherein a lithium fluoride layer is arranged between an electrode and a transmission layer, and the thickness of the lithium fluoride layer is 20-40 nm.
The transparent conductive glass comprises a transparent conductive glass substrate, an electron transport layer, a perovskite layer, a hole transport layer, a lithium fluoride layer and an electrode which are sequentially stacked from bottom to top.
The method comprises the following steps of sequentially laminating a transparent conductive glass substrate, a hole transport layer, a perovskite layer, an electron transport layer, a lithium fluoride layer and an electrode from bottom to top.
The invention also discloses a preparation method of the perovskite solar cell with the protection structure, which comprises the following steps:
s01: preparing an electron transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing a hole transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm;
s05: and preparing an electrode.
The invention also discloses a preparation method of the perovskite solar cell with the protection structure, which comprises the following steps:
s01: preparing a hole transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing an electron transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm;
s05: and preparing an electrode.
In a preferred embodiment, in the evaporation in step S04, the evaporation rate is controlled to be 0.2 to 0.5 angstrom per second after the lithium fluoride source is vaporized.
Compared with the prior art, the invention has the advantages that:
a20-40 nm lithium fluoride layer is arranged between the transmission layer and the electrode of the perovskite solar cell, so that the migration of ions between the transmission layer and the electrode is greatly reduced, the water oxygen transmission rate can be reduced, and the stability of the perovskite solar cell is further improved.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic structural view of a perovskite solar cell having a protective structure according to the present invention;
fig. 2 is a schematic structural diagram of another perovskite solar cell with a protective structure according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
According to the perovskite solar cell with the protection structure, the lithium fluoride layer is arranged between the electrode and the transmission layer, and the thickness of the lithium fluoride layer is 20-40 nm. The migration of ions between the transmission layer and the electrode can be reduced, and the water oxygen transmission rate can be reduced, so that the stability of the water oxygen transmission device is improved.
For the two formal and trans-perovskite solar cell structures, the method can achieve the purpose of improving the electrode stability.
Example 1:
as shown in fig. 1, the perovskite solar cell includes a transparent conductive glass substrate 10, an electron transport layer 20, a perovskite layer 30, a hole transport layer 40, a lithium fluoride layer 50, and an electrode 60, which are sequentially stacked from bottom to top. The transparent conductive glass substrate 10 may be an ITO/FTO. The Electron Transport Layer (ETL), perovskite layer, Hole Transport Layer (HTL) may be any material capable of serving its function. The electrode may be a metal electrode, a carbon electrode or an organic material electrode.
The preparation method of the perovskite solar cell comprises the following steps:
s01: preparing an electron transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing a hole transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm; adding a lithium fluoride source into a thermal evaporator, heating a tungsten boat in the evaporator by controlling the current and voltage intensity, controlling the evaporation speed to be between 0.2 and 0.5 angstrom per second after the lithium fluoride source in the tungsten boat is gasified, and finally determining the film thickness to be between 20nm and 40nm by a film thickness meter.
S05: and preparing an electrode.
Example 2:
as shown in fig. 2, the perovskite solar cell includes a transparent conductive glass substrate 11, a hole transport layer 21, a perovskite layer 31, an electron transport layer 41, a lithium fluoride layer 51, and an electrode 61, which are sequentially stacked from bottom to top. The transparent conductive glass substrate 11 may be ITO/FTO. The Electron Transport Layer (ETL), perovskite layer, Hole Transport Layer (HTL) may be any material capable of serving its function. The electrode may be a metal electrode, a carbon electrode or an organic material electrode.
The preparation method of the perovskite solar cell comprises the following steps:
s01: preparing a hole transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing an electron transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm; adding a lithium fluoride source into a thermal evaporator, heating a tungsten boat in the evaporator by controlling the current and voltage intensity, controlling the evaporation speed to be between 0.2 and 0.5 angstrom per second after the lithium fluoride source in the tungsten boat is gasified, and finally determining the film thickness to be between 20nm and 40nm by a film thickness meter.
S05: and preparing an electrode.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (6)
1. A perovskite solar cell with a protection structure is characterized in that a lithium fluoride layer is arranged between an electrode and a transmission layer, and the thickness of the lithium fluoride layer is 20-40 nm.
2. The perovskite solar cell with the protective structure as claimed in claim 1, which comprises a transparent conductive glass substrate, an electron transport layer, a perovskite layer, a hole transport layer, a lithium fluoride layer and an electrode which are sequentially stacked from bottom to top.
3. The perovskite solar cell with the protective structure as claimed in claim 1, which comprises a transparent conductive glass substrate, a hole transport layer, a perovskite layer, an electron transport layer, a lithium fluoride layer and an electrode which are sequentially stacked from bottom to top.
4. A preparation method of a perovskite solar cell with a protection structure is characterized by comprising the following steps:
s01: preparing an electron transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing a hole transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm;
s05: and preparing an electrode.
5. A preparation method of a perovskite solar cell with a protection structure is characterized by comprising the following steps:
s01: preparing a hole transport layer on a transparent conductive glass substrate;
s02: preparing a perovskite layer;
s03: preparing an electron transport layer;
s04: evaporating a lithium fluoride layer with the thickness of 20-40 nm;
s05: and preparing an electrode.
6. The method for producing a perovskite solar cell having a protective structure as claimed in claims 4 and 5, wherein the evaporation rate is controlled to be 0.2 to 0.5 angstrom per second after the vaporization of the lithium fluoride source in the evaporation in step S04.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911049163.8A CN110854270A (en) | 2019-10-31 | 2019-10-31 | Perovskite solar cell with protection structure and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911049163.8A CN110854270A (en) | 2019-10-31 | 2019-10-31 | Perovskite solar cell with protection structure and preparation method thereof |
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| CN110854270A true CN110854270A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115955851A (en) * | 2023-03-09 | 2023-04-11 | 宁德时代新能源科技股份有限公司 | Perovskite battery, manufacturing method thereof and electricity utilization device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784341A (en) * | 2017-01-20 | 2017-05-31 | 电子科技大学中山学院 | Microwave annealing treatment method for perovskite solar cell photoactive layer |
| CN107316940A (en) * | 2017-06-01 | 2017-11-03 | 苏州大学 | Preparation method with the adjusted and controlled perovskite thin film of light and optics |
| CN109912458A (en) * | 2019-02-28 | 2019-06-21 | 苏州大学 | Metal halide perovskite material, preparation method and solar cell device and preparation method thereof |
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2019
- 2019-10-31 CN CN201911049163.8A patent/CN110854270A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784341A (en) * | 2017-01-20 | 2017-05-31 | 电子科技大学中山学院 | Microwave annealing treatment method for perovskite solar cell photoactive layer |
| CN107316940A (en) * | 2017-06-01 | 2017-11-03 | 苏州大学 | Preparation method with the adjusted and controlled perovskite thin film of light and optics |
| CN109912458A (en) * | 2019-02-28 | 2019-06-21 | 苏州大学 | Metal halide perovskite material, preparation method and solar cell device and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115955851A (en) * | 2023-03-09 | 2023-04-11 | 宁德时代新能源科技股份有限公司 | Perovskite battery, manufacturing method thereof and electricity utilization device |
| CN115955851B (en) * | 2023-03-09 | 2023-08-08 | 宁德时代新能源科技股份有限公司 | Perovskite battery, manufacturing method thereof and power utilization device |
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