Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of zto-zno/cbs-gss flexible thin film solar cell and preparation method thereof

A technology for solar cells and flexible films, applied in the field of solar cells, can solve problems such as poor stability, and achieve the effects of high application flexibility, improved separation efficiency, and good repeatability

Active Publication Date: 2018-10-23
HENAN UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2014, Jeon and Zhou et al. increased the conversion efficiency of perovskite solar cells to 16.2% and 19.3% respectively, but they were still not comparable to crystalline silicon-based solar cells, and their stability was poor; in addition, it affected and restricted thin-film solar cells. There are many factors for photoelectric conversion efficiency. First, it is necessary to design and optimize the internal micro-nano structure to improve its light absorption efficiency, photoelectric conversion efficiency and total power generation efficiency; second, it is necessary to find new thin-film materials that are cheap, clean, and high in photoelectric conversion efficiency. And the preparation method, thirdly, it is necessary to analyze the influence mechanism of the generation, separation, transmission, recombination, extraction and collection of photogenerated charges on the separation efficiency of photogenerated charges at the interface, so as to provide a theoretical basis for the selection of photoelectric materials and the optimization of battery structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of zto-zno/cbs-gss flexible thin film solar cell and preparation method thereof
  • A kind of zto-zno/cbs-gss flexible thin film solar cell and preparation method thereof
  • A kind of zto-zno/cbs-gss flexible thin film solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of ZTO-ZnO / CBS-GSs flexible thin-film solar cell, concrete steps are as follows:

[0023] (1) Growth of ZTO nanowires on flexible substrate SSM: Dissolve 0.21 g of tin tetrachloride and 0.263 g of zinc acetate into a mixed solution of 10 ml of ethylenediamine and 10 ml of water, stir for 30 minutes and slowly add 0.29 g sodium hydroxide, continue to stir for 30 minutes to make it evenly dispersed, then transfer the uniformly dispersed solution to a stainless steel reaction kettle, and put the SSM sheet (stainless steel mesh sheet, 2 × 2.5 cm 2 ) leaning against the inner wall of the stainless steel reaction kettle, keeping it in an oven at 200 °C for 24 hours, cooling to room temperature naturally, and cleaning with deionized water to obtain ZTO nanowires, such as figure 1 As shown in (a), the nanowires have good orientation, the length distribution is 1.5-2.0 µm, and the diameter distribution is 30-100 nm.

[0024] (2) Preparation of ZTO-Z...

Embodiment 2

[0029] Based on the optimal film thickness of ZTO-ZnO / CBS-GSs optimized in Example 1 (4.5 μm), changing the mass percentage of GSs in CBS-GSs (0, 0.5, 1.0, 1.5, 2.0, 2.5 wt%) can A series of ZTO-ZnO / CBS-GSs thin-film structure solar cells can be obtained, and the corresponding photoelectric conversion efficiency is also constantly changing. The synthesis method is as in Example 1, and the change law of the photoelectric conversion efficiency of solar cells with different mass percentages of GSs is as follows: Figure 5 shown. It shows that the photoelectric conversion efficiency increases with the increase of the mass percentage of GSs, reaching the maximum photoelectric conversion efficiency of 11.8% at the optimum mass percentage of 1.5 wt%, and then gradually weakens with the increase of the mass percentage.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
diameteraaaaaaaaaa
conversion efficiencyaaaaaaaaaa
Login to View More

Abstract

A ZTO nanowire and ZnO nanowire composite photoanode (ZTO-ZnO), a Cu4Bi4S9 nanobelt and graphene sheet composite photosensitive layer (CBS-GSs) and a thin film structure (ZTO-ZnO / CBS-GSs) are prepared by taking stainless steel mesh (SSM) as a flexible substrate and are assembled to form a solar cell. The raw material required by the solar cell is rich in storage, the preparation method is simple, safe and environmental-friendly and is good in repeatability, the average photoelectric conversion efficiency at the laboratory stage reaches 10.3%, the optimal photoelectric conversion efficiency exceeds 11%, the solar cell still shows favorable flexibility and bendability after being bent for 1,000 times by flat pliers, and the photoelectric conversion efficiency is still maintained at 95% or above. The novel thin film solar cell is good in flexibility, large in application elasticity and high in adaptability, the problems of energy crisis, environmental pollution and the like can be greatly reduced if the solar cell is applied to field of new energy, and thus, the solar cell has very wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a ZTO-ZnO / CBS-GSs flexible thin-film solar cell and a preparation method thereof. Background technique [0002] As the world's energy crisis and environmental protection issues become increasingly prominent, it is necessary to continuously explore green, safe, sustainable and renewable new energy sources to replace traditional energy sources. Solar cells are devices that directly convert light energy into electrical energy through photoelectric or photochemical effects. "Green" new technologies that are in conflict with energy and the environment. It is a new type of solar cell that has been developed rapidly in recent years by using the sensitive effect of photosensitive materials on visible light and the photoanode to prepare thin-film solar cells. In 2014, Jeon and Zhou et al. increased the conversion efficiency of perovskite solar cells to 16.2% and 19.3% res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0224H01L31/028H01L31/032H01L31/074B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01L31/022425H01L31/028H01L31/032H01L31/074H01L31/18Y02E10/547Y02P70/50
Inventor 刘向阳牛晨顾玉宗
Owner HENAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com