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Perovskite solar cell with stable performance in air environment and preparation method of perovskite solar cell

A solar cell and air environment technology, applied in the manufacture/processing of organic semiconductor devices, circuits, photovoltaic power generation, etc., can solve problems such as ineffective effects, easy decomposition, and dependence

Inactive Publication Date: 2016-03-30
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of battery is easy to decompose due to its sensitivity to moisture and light irradiation in the environment. At present, many research groups have done some research on the stability of this type of perovskite, such as modifying a layer of perovskite by atomic layer deposition and other methods. Aluminum oxide thin layer, although this method can better improve the hydrophobicity of perovskite, but this method relies on expensive equipment
Other groups used the hydrophobic properties of silane to graft a layer of silane branched chains on the surface of perovskite, changing the hydrophilicity of the perovskite surface, but the effect was not outstanding.

Method used

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  • Perovskite solar cell with stable performance in air environment and preparation method of perovskite solar cell
  • Perovskite solar cell with stable performance in air environment and preparation method of perovskite solar cell
  • Perovskite solar cell with stable performance in air environment and preparation method of perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Choose FTO glass as the substrate, wash it with detergent, acetone, ethanol in sequence, and then dry it.

[0040] 2. Electron blocking layer and electron transport layer

[0041] Tetrabutyl titanate and ethylenediamine were dissolved in water and ethanol to prepare a titanium dioxide sol, which was spin-coated on the FTO substrate at a rotation speed of 4000r.p.m for 30s, and then dried on a hot stage at 80°C for 5min. The material was diluted in ethanol, and spin-coated on the FTO substrate containing titanium dioxide sol at a rotation speed of 4000r.p.m for 30s, then annealed at 120°C for 5min, and then the prepared electron transport layer was sintered at 500°C for 30min.

[0042] 3. CH 3 NH 3 PB 3 Preparation of perovskite layer

[0043] (1) Synthesis of CH 3 NH 3 I

[0044] Place a round-bottomed flask containing 30ml of methylamino alcohol solution in ice water at 0°C, add 33ml of hydroiodic acid while stirring into the flask, and continue to react in a...

Embodiment 2

[0055] 1. Choose FTO glass as the substrate, wash it with detergent, acetone, ethanol in sequence, and then dry it.

[0056] 2. Preparation of electron blocking layer and electron transport layer

[0057] With step 2 in embodiment 1

[0058] 3. CH 3 NH 3 PB 3 Preparation of perovskite layer

[0059] With step 3 in embodiment 1

[0060] 4. Preparation of hydrophobic interface layer

[0061] Dissolve tridecafluorooctyltriethoxysilane in isopropanol, then heat at 80°C for 30min to obtain a 1wt% alcoholyzed fluorosilane solution, and in a glove box, dissolve the alcoholyzed fluorosilane solution Spin coating on the perovskite layer, the rotation speed is 6000r.p.m, and the time is 30s.

[0062] 5. Preparation of hole transport layer

[0063] Same as step 5 in Example 1.

[0064] 6. Preparation of metal layer

[0065] Same as step 6 in Example 1.

[0066] Implementation effect: Finally, the performance test of the battery is carried out, at AM1.5, 100mW / cm 2 The test wa...

Embodiment 3

[0068] 1. Choose FTO glass as the substrate, wash it with detergent, acetone, ethanol in sequence, and then dry it.

[0069] 2. Preparation of electron blocking layer and electron transport layer

[0070] With step 2 in embodiment 1

[0071] 3. CH 3 NH 3 PB 3 Preparation of perovskite layer

[0072] With step 3 in embodiment 1

[0073] 4. Preparation of hydrophobic interface layer

[0074] Dissolve tridecafluorooctyltriethoxysilane in isopropanol, and then heat at 80°C for 30 minutes to obtain a 2wt% alcoholyzed fluorosilane solution. In a glove box, the alcoholyzed fluorosilane solution Spin coating on the perovskite layer, the rotation speed is 6000r.p.m, and the time is 30s.

[0075] 5. Preparation of hole transport layer

[0076] Same as step 5 in Example 1.

[0077] 6. Preparation of metal layer

[0078] Same as step 6 in Example 1.

[0079] Implementation effect: Finally, the performance test of the battery is carried out, at AM1.5, 100mW / cm 2 The test was ca...

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Abstract

The invention relates to a perovskite solar cell with stable performance in an air environment and a preparation method of the perovskite solar cell. The solar cell sequentially comprises a conductive base, an electron blocking layer, an electron transport layer, a perovskite sensitization layer, a hydrophobic interface layer, a hole transport layer and a metal layer from bottom to top. The preparation method comprises the following steps: depositing the electron blocking layer and the electron transport layer on the conductive base; depositing the perovskite sensitization layer; depositing the hydrophobic interface layer; depositing the hole transport layer; and depositing the metal layer. According to the perovskite solar cell provided by the invention, the stability of the perovskite cell in air is obviously improved.

Description

technical field [0001] The invention belongs to the field of perovskite solar cell and its preparation, in particular to a perovskite solar cell with stable performance in air environment and its preparation method. Background technique [0002] Due to its excellent photoelectric effect, perovskite solar cells have developed rapidly in recent years. Their photoelectric conversion efficiency has exceeded 20%, the sensitized layer is as thin as less than 1 micron, and the amount of precious metals is less, which has attracted widespread attention. However, this kind of battery is easy to decompose due to its sensitivity to moisture and light irradiation in the environment. At present, many research groups have done some research on the stability of this type of perovskite, such as modifying a layer of perovskite by atomic layer deposition and other methods. A thin layer of alumina, although this method can better improve the hydrophobicity of perovskite, but this method relies...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/40H10K30/00H10K71/00H10K2102/00Y02E10/549
Inventor 张青红熊浩芮一川王宏志李耀刚
Owner DONGHUA UNIV
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