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A fully inorganic perovskite solar cell and a preparation method thereof

A technology for solar cells and inorganic calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as low solubility, limited device performance, and poor film-forming properties of inorganic perovskite, so as to improve solubility and film-forming quality , solve the effect of low solubility

Active Publication Date: 2018-12-28
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, inorganic Cs + Low solubility in commonly used organic solvents leads to poor film-forming properties of inorganic perovskites, which greatly limits device performance

Method used

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  • A fully inorganic perovskite solar cell and a preparation method thereof
  • A fully inorganic perovskite solar cell and a preparation method thereof
  • A fully inorganic perovskite solar cell and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, the complex PbI 2 (DMSO) preparation: 4.84g PbI 2 Dissolve in 15mL DMSO, heat to PbI at 60°C 2 Dissolve completely, and then slowly add about 35mL of toluene to it, and a white precipitate appears. After the precipitate is completely precipitated, the precipitate is filtered, left at room temperature for 3 hours, and then vacuum-dried at 60°C for 24 hours.

[0029] Second, the complex PbBr 2 (DMSO) preparation: 3.85g PbBr 2 Dissolve in 15mL DMSO, heat to PbBr at 60°C 2 Dissolve completely, and then slowly add about 35mL of hot acetone to it, and a white precipitate appears. After the precipitate is completely precipitated, filter the precipitate, leave it at room temperature for 3 hours, and then dry it under vacuum at 60°C for 24 hours.

[0030] Third, refine CsI grains: Dissolve 2.73g CsI in 15mL DMSO, slowly raise the temperature until CsI is completely dissolved, then slowly add about 35mL isopropanol to it, a white precipitate appears, and after the prec...

Embodiment 2

[0038] In this example, the thickness of the gold electrode is 90nm, and the annealing process for crystallizing the precursor thin film to form an all-inorganic perovskite light absorbing layer is: 30°C, 5min, 120°C, 2min. Other steps are identical with embodiment 1. In this example, the efficiency of the inorganic perovskite solar cell was 13.48%.

Embodiment 3

[0040] In this example, the thickness of the gold electrode is 85nm, and the preparation of CsPbI 2 The solvent used for the Br precursor solution is DMF. Other steps are identical with embodiment 1. In this example, the efficiency of the inorganic perovskite solar cell was 10.08%.

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Abstract

A fully inorganic perovskite solar cell and a preparation method thereof are provided. The method comprises the steps of: 1. adding CsI into DMSO, dissolving completely, adding isopropanol, precipitating, filtering, and vacuum drying to obtain treated CsI; 2, dissolving PbI2 (DMSO), PbBr2 (DMSO) and treated CsI, according to the molar ratio of the corresponding elements of CsPbI2Br, to prepare a precursor solution; 3, preparing an electron transport layer on the substrate; spin-coating the solution on the surface of the electron transport layer, and performing annealing at the temperature of 30-40 DEG C and 120-200 DEG C for 2-5 min, so that thin film is crystallized to obtain a fully inorganic perovskite light absorbing lay; 4, sequentially preparing a hole transport layer and a gold electrode layer on the surface of the absorption layer to obtain a fully inorganic perovskite solar cell. The perovskite battery has good stability of water and oxygen, good film-forming property, simplemethod and strong repeatability.

Description

technical field [0001] The invention relates to a thin-film solar cell, in particular to an all-inorganic perovskite solar cell and a preparation method. Background technique [0002] The growing demand for energy and the limited supply of energy have begun to restrict the development of the world economy. People are paying more and more attention to energy issues, and the environmental pollution caused by irrational use of resources has also seriously affected the quality of human life. Under such circumstances, people have to turn their attention to new, clean and renewable green energy sources - wind energy, tidal energy, hydropower energy, biomass energy, and solar energy. In fact, the essence of the above-mentioned renewable energy sources is solar energy. . Therefore, new solar cells such as perovskite solar cells are becoming a research hotspot. Since 2009, Japan's Miyasaka et al. first used organometallic halide CH with a perovskite structure 3 NH 3 PbBr 3 and C...

Claims

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Application Information

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IPC IPC(8): H01L31/0264H01L31/0392H01L31/18
CPCH01L31/0264H01L31/0392H01L31/18Y02E10/50Y02P70/50
Inventor 刘治科赵欢殷冠南韩玉袁世豪姜红刘生忠
Owner SHAANXI NORMAL UNIV
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