Perovskite thin-film solar cell employing cadmium sulfide as window material and preparation method of perovskite thin-film solar cell

A solar cell and perovskite technology, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of unadaptable photoelectric conversion efficiency, stability of perovskite solar cells, and restrictions on the industrialization of perovskite solar cells, etc. question

Pending Publication Date: 2018-04-03
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nevertheless, there are still some technical bottlenecks restricting the industrialization of perovskite solar cells, such as the stability of perovskite solar cells, the photoelectric conversion efficiency cannot adapt to the modern society with high energy demand, etc.

Method used

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  • Perovskite thin-film solar cell employing cadmium sulfide as window material and preparation method of perovskite thin-film solar cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A kind of preparation method of the perovskite thin-film solar cell using cadmium sulfide as window material, according to the following steps:

[0016] First, the N-type cadmium sulfide film was deposited on the FTO conductive glass substrate by chemical vapor deposition; then, the P-type perovskite film was deposited on the N-type cadmium sulfide film by a one-step solution method; then, the P-type perovskite film was The P-type heavily doped graphene film is prepared by spin-coating on the film; finally, silver metal front and back electrodes are respectively deposited on the P-type heavily doped graphene film and the FTO conductive glass substrate by evaporation method, that is, the required for perovskite thin-film solar cells.

Embodiment 2

[0017] Embodiment two: first, utilize chemical vapor deposition method to deposit N-type cadmium sulfide film on ITO conductive glass substrate; Then, utilize two-step continuous deposition method to deposit P-type perovskite film on N-type cadmium sulfide film; Then, On the P-type perovskite film, the P-type heavily doped graphene film was deposited by electrophoresis; finally, on the P-type heavily doped graphene film and the ITO conductive glass substrate, the aluminum metal front and the The back electrode is to make the required perovskite thin film solar cell.

Embodiment 3

[0018] Embodiment three: first, utilize sol-gel method to prepare N-type cadmium sulfide film on ZTO conductive glass substrate; Then, utilize solution-vapor phase precipitation method to prepare P-type perovskite film on N-type cadmium sulfide film; Then , on the P-type perovskite film by chemical vapor deposition method to prepare P-type heavily doped graphene film; finally, on the P-type heavily doped graphene film and ZTO conductive glass substrate by screen printing The metal front and back electrodes are used to make the required perovskite thin film solar cells.

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Abstract

The invention discloses a perovskite thin-film solar cell employing cadmium sulfide as a window material and a preparation method of the perovskite thin-film solar cell. The perovskite thin-film solarcell is characterized in that the structure of the solar cell sequentially comprises a transparent conductive substrate 1, an N-type cadmium sulfide thin film 2, a P-type perovskite thin film 3, a P-type heavily doped graphene thin film 4 and a metal electrode 5 from bottom to top. The perovskite thin-film solar cell has the advantages that: on one hand, a good window effect of the cadmium sulfide is utilized and the cadmium sulfide is taken as an electronic selective contact layer, so that the photoelectric conversion efficiency of the perovskite solar cell can be greatly improved; and on the other hand, heavily doped graphene has high carrier mobility and conductivity, the perovskite thin film can be effectively prevented from being degraded by water and oxygen in air due to the compactstructure characteristic of the heavily doped graphene, harmful diffusion of the metal electrode towards the perovskite thin film is blocked, so that the stability and the photoelectric conversion efficiency of a traditional perovskite solar cell are greatly improved.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to a perovskite thin-film solar cell using cadmium sulfide as a window material and a preparation method thereof. Background technique [0002] With the continuous development of society and the continuous improvement of people's living standards, the demand for energy is also increasing. More and more countries have begun to implement the "Sunshine Plan" to develop solar energy resources and seek new impetus for economic development. Solar cells are very good photoelectric conversion devices. So far, the development of silicon solar cells is the most mature, and has always occupied a dominant position in large-scale applications and industrial production. However, due to the high cost of silicon, it is difficult to greatly reduce its cost. Finding new low-cost, high-efficiency and stable solar cells has always been the pursuit goal of scientific researchers. [0003] The eme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K30/15H10K2102/00Y02E10/549
Inventor 罗云荣陈国柱羊亿李昭萍张晶杨红李曼殊
Owner HUNAN NORMAL UNIVERSITY
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