CN113410398A - Method for preparing perovskite photoelectric detector by anti-solvent one-step method - Google Patents

Method for preparing perovskite photoelectric detector by anti-solvent one-step method Download PDF

Info

Publication number
CN113410398A
CN113410398A CN202110659473.2A CN202110659473A CN113410398A CN 113410398 A CN113410398 A CN 113410398A CN 202110659473 A CN202110659473 A CN 202110659473A CN 113410398 A CN113410398 A CN 113410398A
Authority
CN
China
Prior art keywords
perovskite
solvent
annealing
thin film
photoelectric detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110659473.2A
Other languages
Chinese (zh)
Inventor
姚建铨
李腾腾
李庆岩
唐新
赵宏亮
王思磊
张雅婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest University of Science and Technology
Southern University of Science and Technology
Original Assignee
Southwest University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southwest University of Science and Technology filed Critical Southwest University of Science and Technology
Priority to CN202110659473.2A priority Critical patent/CN113410398A/en
Publication of CN113410398A publication Critical patent/CN113410398A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10Deposition of organic active material
    • H10K71/12Deposition of organic active material using liquid deposition, e.g. spin coating
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/30Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/30Coordination compounds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Light Receiving Elements (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention provides a method for preparing a perovskite photoelectric detector by an anti-solvent one-step method. The detector prepared by the invention has the optical power density of 6.37 mu W/cm2Under the condition of irradiating the 532nm laser diode and biasing at-2V, the responsivity reaches 1.56A/W and the detectivity reaches 1.47 multiplied by 1012Jones, linear dynamic range reaches 110 dB. In addition, compared with the traditional anti-solvent, the tert-amyl alcohol has low manufacturing cost and is not controlled by hazardous chemicals, and reference is provided for preparing the high-performance vertical-structure perovskite photoelectric detector.

Description

Method for preparing perovskite photoelectric detector by anti-solvent one-step method
Technical Field
The invention relates to the field of photoelectron materials and devices, in particular to a method for preparing a perovskite photoelectric detector by using an anti-solvent one-step method.
Background
The photoelectric detector can convert a light signal which is difficult to quantify into an electric signal which can be accurately detected, and plays a great role in industrial and scientific research, such as imaging, optical communication, chemical/biological sensing, environmental monitoring and the like. For photodetectors, the most important is the semiconductor material. The semiconductor material acts as a photoactive layer, capable of absorbing photon energy and generating photogenerated carriers (electron-hole pairs). These separated electrons and holes are transported to both ends of the electrode under the action of an internal electric field or an external bias voltage to generate a current signal. Currently, the commercial detectors mainly use inorganic semiconductor materials, such as GaN, Si, and InGaAs. The detectors have the advantages of mature preparation industry, clear working mechanism and the like, but the preparation processes are complex and expensive, and the driving voltage is high, so that the application range of the detectors is limited. Over the past decade or so, low-cost, solution-processable photovoltaic materials, such as organic materials, nanomaterials and nanocomposites, have shown great potential for application in the field of flexible large area detectors. However, these materials also have some considerable disadvantages, which have influenced their further development. Recently, perovskite materials have been widely used in solar cell, LED, laser and photodetector research due to their unique advantages of high carrier mobility, high light absorption coefficient, long carrier diffusion length, adjustable direct band gap, etc. The vertical-structure photoelectric detector has the advantages of short carrier transmission distance, fast frequency response, linear correlation between photocurrent and incident light intensity and the like, so that the vertical-structure photoelectric detector is very suitable for the fields of visible light communication and imaging.
The most important factors that have been reported to affect the performance of perovskite detectors are poor film quality and defects present at the surface and grain boundaries of the perovskite film. Therefore, it is important to find a way to effectively enhance the quality of the film. In order to better regulate the film-forming quality of the film, a very useful way is to add an anti-solvent, such as toluene, chlorobenzene, and other mixed anti-solvents, etc. dropwise in the perovskite spin-coating process, so that the perovskite nucleation and crystal growth processes can be effectively regulated, and the uniform, compact and pore-free perovskite film can be obtained. The anti-solvent used in the method is tert-amyl alcohol, and compared with the traditional anti-solvents, the tert-amyl alcohol serving as the anti-solvent has the advantages of better device performance, low toxicity, low cost, easiness in obtaining and the like, so that the method has more advantages compared with the traditional anti-solvents.
Disclosure of Invention
The invention provides a method for preparing a perovskite photoelectric detector by an anti-solvent one-step method, overcomes the defects of strong toxicity of the traditional anti-solvent, controlled solvent, difficult obtainment and the like, and obtains the device performance superior to the device performance of the traditional anti-solvent participating in preparation.
The technical scheme for realizing the invention is as follows:
the perovskite photoelectric detector comprises a conductive substrate, a hole transport layer, a perovskite thin film, an electron transport layer and a metal electrode, wherein the perovskite thin film is prepared by using an anti-solvent.
The anti-solvent is tert-amyl alcohol.
Preferably, the transparent conductive substrate can be ITO conductive glass, and can also be FTO or AZO, TCO.
Preferably, the hole transport layer is PEDOT PSS.
Preferably, the electron transport layer is PC61BM and BCP.
Preferably, the metal electrode may be gold, silver.
The optical power density of the perovskite photoelectric detector is 6.37 mu W/cm2Under the condition of irradiating the 532nm laser diode and biasing at-2V, the responsivity reaches 1.56A/W and the detectivity reaches 1.47 multiplied by 1012Jones, linear dynamic range reaches 110 dB.
The perovskite thin film is prepared by the following specific steps:
s1: preparing a perovskite precursor solution;
s2: dropwise adding a tert-amyl alcohol anti-solvent in the spin coating process of the perovskite precursor solution;
s3: and carrying out thermal annealing and solvent annealing treatment in sequence to obtain the perovskite thin film.
The perovskite in step S1 is CH3NH3PbI3
The volume ratio of the perovskite precursor solution to the tertiary amyl alcohol antisolvent in the step S2 is 1 (2-3), and the perovskite precursor solution is spin-coated at 6000rpm for 30-60S.
And (S2) pre-annealing for 10-15S on a heating table after the spin coating is finished, taking out the sample, heating and annealing under the ambient air condition, and then continuously annealing for 10 minutes in a DMSO atmosphere to obtain the perovskite thin film.
The pre-annealing is carried out in a glove box protected by nitrogen, and the heating annealing temperature in the ambient air is 80-100 ℃ and the time is 10-30 min.
The invention has the beneficial effects that: the detector prepared by the invention has the optical power density of 6.37 mu W/cm2Under the condition of irradiating the 532nm laser diode and biasing at-2V, the responsivity reaches 1.56A/W and the detectivity reaches 1.47 multiplied by 1012Jones, linear dynamic range reaches 110 dB. In addition, compared with the traditional anti-solvent, the tert-amyl alcohol has low manufacturing cost and is not controlled by hazardous chemicals, and reference is provided for preparing the high-performance vertical-structure perovskite photoelectric detector.
The tert-amyl alcohol anti-solvent adopted by the invention has moderate polarity, and can effectively remove redundant DMF and DMSO solvent in the precursor solution in the dropping process, thereby accelerating homogeneous nucleation of perovskite and growth of perovskite crystal grains, and then obtaining a uniform, compact and pore-free high-quality perovskite thin film through high-temperature annealing and solvent annealing processes, thereby obtaining a high-performance vertical structure photoelectric detector.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the device structure of a perovskite photodetector.
FIG. 2 is a flow chart of perovskite thin film preparation using t-amyl alcohol as an anti-solvent.
FIG. 3 is an XRD pattern of a perovskite thin film prepared using t-amyl alcohol as an anti-solvent.
FIG. 4 is a scanning electron micrograph of a perovskite thin film prepared using t-amyl alcohol as an anti-solvent.
FIG. 5 is a graph of the responsivity of a perovskite photodetector fabricated using t-amyl alcohol as an anti-solvent.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the device structure of the perovskite photodetector includes: the ITO conductive substrate, the hole transport layer, the perovskite thin film, the electron transport layer and the metal electrode.
Further, the transparent conductive substrate may be ITO conductive glass.
And furthermore, the hole transport layer is PEDOT PSS.
Further, the electron transport layer is PC61BM and BCP.
Further, the metal electrode may be gold or silver.
Example 1
Weighing a mixture with a molar ratio of 1: 1.05 CH3NH3I powder and PbI2Dissolving the powder in 1ml of mixed solvent of DMF (dimethylformamide) and DMSO (dimethyl sulfoxide) (the volume ratio of DMF to DMSO is 9:1), adding magnetons into the prepared solution, stirring for 12 hours, and reacting fully to obtain a clear yellowish perovskite precursor solution.
100 μ L of the precursor solution was dropped onto the substrate and spun at 6000rpm for 30 s. And (3) dropwise adding 250 mu L of anti-solvent tert-amyl alcohol in the spin coating process in the second step, and pre-annealing on a heating table for 10-15 s after the spin coating is finished, wherein the processes are carried out in a glove box protected by nitrogen. And taking out the sample, heating and annealing at 100 ℃ for 20 minutes under the ambient air condition, and then placing the sample in a DMSO atmosphere to continue annealing for 10 minutes to obtain the perovskite thin film.
As shown in an XRD diagram in FIG. 3, the perovskite thin film prepared by the one-step method by using tertiary amyl alcohol as an anti-solvent has obvious diffraction characteristic peaks at 14.1 degrees, 28.5 degrees and 31.9 degrees, which respectively correspond to 110, 220 and 310 crystal planes of perovskite crystals, and the perovskite thin film is formed, and the result is further proved by an SEM diagram in FIG. 4, and the uniform, dense and pore-free high-quality perovskite thin film is formed.
The preparation process of the perovskite photoelectric detector comprises the following steps: and (3) carrying out ultrasonic treatment on the ITO substrate by using a glass cleaning agent, deionized water, acetone and isopropanol in sequence, and then carrying out ultraviolet ozone treatment for 15 minutes. PSS (PEDOT) is added dropwise on the substrate, and spin coating is carried out at 4000rpm for 40 s. The perovskite thin film was then prepared according to the procedure described in example 1 above, followed by spin coating of PC in sequence61BM (4000rpm spin-on 40s) and BCP (6000rpm spin-on 40s), and finally 100nm Ag by thermal evaporation. The Responsivity (Responsivity) of the perovskite photodetector prepared by using tertiary amyl alcohol as an anti-solvent is 6.37 mu w/cm2The detection degree of the vertical structure perovskite photoelectric detector can reach 1.56A/W under the irradiation of a 532nm laser diode, the detection degree is shown in figure 5, and the detection degree (Detectivity) of the vertical structure perovskite photoelectric detector prepared by using tertiary amyl alcohol as an anti-solvent reaches 1.47 multiplied by 1012Jones, linear dynamic range reaches 110 dB. In addition, compared with the traditional anti-solvent, the tert-amyl alcohol has low manufacturing cost and is not controlled by hazardous chemicals, and reference is provided for preparing the high-performance vertical-structure perovskite photoelectric detector.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. A method for preparing a perovskite photoelectric detector by an anti-solvent one-step method is characterized by comprising the following steps: the perovskite photoelectric detector comprises a conductive substrate, a hole transport layer, a perovskite thin film, an electron transport layer and a metal electrode, wherein the perovskite thin film is prepared by using an anti-solvent.
2. The method of claim 1, wherein: the anti-solvent is tert-amyl alcohol.
3. The method of claim 1, wherein: the optical power density of the perovskite photoelectric detector is 6.37 mu W/cm2Under the condition of irradiating the 532nm laser diode and biasing at-2V, the responsivity reaches 1.56A/W and the detectivity reaches 1.47 multiplied by 1012Jones, linear dynamic range reaches 110 dB.
4. The method according to any one of claims 1 to 3, wherein the perovskite thin film is prepared by the following specific steps:
s1: preparing a perovskite precursor solution;
s2: dropwise adding a tert-amyl alcohol anti-solvent in the spin coating process of the perovskite precursor solution;
s3: and carrying out thermal annealing and solvent annealing treatment in sequence to obtain the perovskite thin film.
5. The method of claim 4, wherein: the perovskite in the step S1 is CH3NH3PbI3
6. The method of claim 4, wherein: the volume ratio of the perovskite precursor solution to the tertiary amyl alcohol antisolvent in the step S2 is 1 (2-3), and the perovskite precursor solution is spin-coated at 6000rpm for 30-60S.
7. The method of claim 4, wherein: and (S2) pre-annealing for 10-15S on a heating table after the spin coating is finished, taking out the sample, heating and annealing under the ambient air condition, and then continuously annealing for 10 minutes in a DMSO atmosphere to obtain the perovskite thin film.
8. The method of claim 7, wherein: and pre-annealing is carried out in a nitrogen-protected glove box, and the heating annealing temperature in the ambient air is 80-100 ℃ for 10-30 min.
CN202110659473.2A 2021-06-15 2021-06-15 Method for preparing perovskite photoelectric detector by anti-solvent one-step method Pending CN113410398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110659473.2A CN113410398A (en) 2021-06-15 2021-06-15 Method for preparing perovskite photoelectric detector by anti-solvent one-step method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110659473.2A CN113410398A (en) 2021-06-15 2021-06-15 Method for preparing perovskite photoelectric detector by anti-solvent one-step method

Publications (1)

Publication Number Publication Date
CN113410398A true CN113410398A (en) 2021-09-17

Family

ID=77683882

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110659473.2A Pending CN113410398A (en) 2021-06-15 2021-06-15 Method for preparing perovskite photoelectric detector by anti-solvent one-step method

Country Status (1)

Country Link
CN (1) CN113410398A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359246A (en) * 2017-06-20 2017-11-17 太原理工大学 A kind of preparation method of methylamine lead iodine perovskite solar cell
CN108217718A (en) * 2018-03-13 2018-06-29 南方科技大学 A kind of ABX3Nanocrystalline synthetic method of perovskite and products thereof and purposes
CN111933807A (en) * 2020-08-28 2020-11-13 电子科技大学 High-stability perovskite photoelectric detector prepared based on additive treatment and preparation method thereof
US20210166885A1 (en) * 2018-08-09 2021-06-03 Soochow University Method for preparing inorganic perovskite battery based on synergistic effect of gradient annealing and antisolvent, and prepared inorganic perovskite battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359246A (en) * 2017-06-20 2017-11-17 太原理工大学 A kind of preparation method of methylamine lead iodine perovskite solar cell
CN108217718A (en) * 2018-03-13 2018-06-29 南方科技大学 A kind of ABX3Nanocrystalline synthetic method of perovskite and products thereof and purposes
US20210166885A1 (en) * 2018-08-09 2021-06-03 Soochow University Method for preparing inorganic perovskite battery based on synergistic effect of gradient annealing and antisolvent, and prepared inorganic perovskite battery
CN111933807A (en) * 2020-08-28 2020-11-13 电子科技大学 High-stability perovskite photoelectric detector prepared based on additive treatment and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TENGTENG LI等: "Environment-friendly antisolvent tert-amyl alcohol modified hybrid perovskite photodetector with high responsivity", 《PHOTONICS RESEARCH》 *

Similar Documents

Publication Publication Date Title
Li et al. Highly sensitive, fast response perovskite photodetectors demonstrated in weak light detection circuit and visible light communication system
Cao et al. High-performance UV–vis photodetectors based on electrospun ZnO nanofiber-solution processed perovskite hybrid structures
CN107919409B (en) One kind being based on CsPbBr3The visible light photodetector and preparation method thereof of full-inorganic perovskite nano wire
CN107204379B (en) A kind of inorganic perovskite thin film of high quality and preparation method thereof and application in solar cells
Ding et al. A general wet transferring approach for diffusion-facilitated space-confined grown perovskite single-crystalline optoelectronic thin films
Ding et al. High-performance stretchable photodetector based on CH 3 NH 3 PbI 3 microwires and graphene
CN109244246B (en) Broadband photoelectric detector based on topological insulator bismuth selenide electrode
CN108258117B (en) Stable high-performance perovskite photoelectric detector and preparation method thereof
CN111525036B (en) Self-driven perovskite photoelectric detector and preparation method thereof
CN109841703B (en) All-inorganic perovskite photoelectric detector and preparation method thereof
Young et al. ZnO nanorod humidity sensor and dye-sensitized solar cells as a self-powered device
Srivastava et al. Pentacene and CuO nanocomposite based self-powered broadband photodetector
CN111864080A (en) Two-dimensional organic-inorganic hybrid perovskite crystal photoelectric detector and preparation method thereof
CN107768478A (en) A kind of organic/perovskite bulk-heterojunction nanowire photodiode detector and preparation method thereof
Zhao et al. Asymmetric au electrodes-induced self-powered organic–inorganic perovskite photodetectors
Zhu et al. High-performance and stable Sb2S3 thin-film photodetectors for potential application in visible light communication
CN104638109A (en) Cathode interface material for organic solar cells and preparation method thereof
CN110718633A (en) Wide-spectrum photoelectric detector based on perovskite-carbon nano tube bulk heterojunction
Young et al. Pd nanoparticle adsorption ZnO nanorods for enhancing photodetector UV-sensing performance
Imran et al. Highly efficient and stable inverted perovskite solar cells with two-dimensional ZnSe deposited using a thermal evaporator for electron collection
CN112271259A (en) Flexible multiplication type organic photoelectric detector and preparation method thereof
CN113410398A (en) Method for preparing perovskite photoelectric detector by anti-solvent one-step method
Zhao et al. Atmospheric preparation of ZnO thin films by mist chemical vapor deposition for spray-coated organic solar cells
Guo et al. Durable and stable UV–Vis perovskite photodetectors based on CH 3 NH 3 PbI 3 crystals synthesized via a solvothermal method
CN111952383B (en) CsPbBr3-CsPb2Br5Self-driven visible light photoelectric detector of all-inorganic mixed perovskite thin film

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210917

RJ01 Rejection of invention patent application after publication