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Sb-SnO2-AgNWs/CBS-GNs flexible thin film solar cell and preparation method thereof

A solar cell, sb-sno2-agnws technology, applied in the field of solar cells, can solve the problems of harsh preparation conditions, narrow application range, and poor flexibility of thin-film solar cells

Active Publication Date: 2018-12-28
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a Sb-SnO with rich raw material reserves, full of innovation, superior photoelectric properties, good flexibility, wide application range, strong adaptability, safety and environmental protection 2 -silver nanowires / Cu 4 Bi 4 S 9 -graphenenanosheets (referred to as Sb-SnO 2 -AgNWs / CBS-GNs) thin-film solar cells and their preparation methods can not only avoid the high cost of silicon-based solar cells and the bottleneck of limited resource reserves, but also solve the problems of harsh preparation conditions, poor flexibility, and narrow application range of other thin-film solar cells.

Method used

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  • Sb-SnO2-AgNWs/CBS-GNs flexible thin film solar cell and preparation method thereof
  • Sb-SnO2-AgNWs/CBS-GNs flexible thin film solar cell and preparation method thereof
  • Sb-SnO2-AgNWs/CBS-GNs flexible thin film solar cell and preparation method thereof

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Embodiment 1

[0025] Sb-SnO 2 -The preparation method of AgNWs / CBS-GNs flexible thin film solar cells, the process is as follows:

[0026] (1) The purchased poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT:PSS) was deposited (about 15 nm in thickness) onto the PET substrate to improve the contact between AgNWs and the substrate; Fine AgNWs (diameter ≤20 nm) dispersed to 5.5 ml EMIMBF 4 Mixed solution with ultrapure water (volume ratio 1:10), continuously stirred for 10 min to obtain a uniform dispersion of AgNWs (the electron microscope scanning image is shown in the figure below). figure 1 a, indicating that AgNWs in EMIMBF 4 AgNWs solution was deposited on PEDOT:PSS by spin-coating deposition technology, and kept at 80 °C for 1 h to completely evaporate the water, and the AgNWs electrode (thickness was 45 nm) was obtained.

[0027] (2) Put an appropriate amount of SnCl 4 ·5H 2 O was uniformly dispersed in isopropanol, and stirred continuously for 30 min to obtain a 0....

Embodiment 2

[0031] For Sb-SnO 2 -AgNWs electron transport layer, gradually increase the mass percentage of AgNWs (with Sb-SnO 2 and AgNWs total amount, the addition amount of AgNWs is 0.0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6 wt%), the photoelectric conversion efficiency of the corresponding thin-film solar cells shows a trend of increasing first and then decreasing. Example 1: The photoelectric conversion efficiency of the flexible solar cell varies with the mass percentage of AgNWs as follows: Figure 4 (a). It is shown that the introduction of an appropriate amount (0.2~1.6 wt%) of AgNWs can significantly improve the Sb-SnO 2 Electron transport characteristics, the photoelectric conversion efficiency increased from 10.62% to the maximum efficiency of 13.05% (the addition of AgNWs was 1.0wt%), which improved the photoelectric conversion efficiency; (b) Sb-SnO 2 -AgNWs / CBS-GNs photoelectric conversion efficiency retention rate with the number of bending times, the prepared solar cel...

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Abstract

The invention provides a Sb-SnO2-AgNWs / CBS-GNs flexible thin film solar cell and preparation method thereof, and belongs to the field of solar cells. The method comprises the steps of: dispersing purchased ultrafine silver nanowires in a mixed solution of an ionic liquid (EMIMBF4) and ultrapure water (volume ratio 1:10), and performing stirring to obtain an AgNWs homogeneous dispersion of, and depositing AgNWs on a polybutylene terephthalate (PET) substrate to prepare a flexible electrode by a spin coating deposition technique; secondly, adding Sb (3 +) doping and AgNWs into the SnO 2 precursor solution at the same time, and obtaining an Sb-SnO2-AgNWs electron transport layer through spin coating deposition; finally, preparing CBS nanobelts by adding a proper amount of GNs (0.8-1.2 wt%) into a CBS nanobelt solution, depositing a CBS-GNs photosensitive layer, a NiOx hole transport layer and a metal counter electrode and assembling a thin film solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a kind of Sb-SnO 2 -AgNWs / CBS-GNs flexible thin film solar cells and preparation methods thereof. Background technique [0002] Solar cells are an important technical basis for the large-scale conversion of solar energy into electrical energy. The development of solar cells is a "green" new technology that alleviates the contradiction between economic development and energy and the environment. Among them, crystalline silicon solar cells using the photoelectric effect as the working mechanism have been The development is relatively mature, and the third-generation thin-film solar cells based on photochemical effects are still in the experimental research stage, but they have shown good development prospects and commercialization trends. In recent years, the photoelectric conversion efficiency of organic-inorganic hybrid perovskite solar cells has rapidly increased from the i...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCH01G9/2022H01G9/2063Y02E10/542
Inventor 刘向阳牛晨顾玉宗
Owner HENAN UNIVERSITY
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