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Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar energy, can solve the problems of improvement, low electron mobility of the electron transport layer, affecting cell efficiency, etc., and achieve the effects of simple preparation process, enhanced electron transport capability, and improved production efficiency.

Inactive Publication Date: 2020-09-04
北京宏泰创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The application provides a perovskite solar cell and its preparation method to solve the problem that the electron mobility of the electron transport layer is low in the prior art and affects the improvement of cell efficiency

Method used

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] figure 1 Schematic diagram of the structure of the perovskite solar cell provided in Example 1 of the present application. Such as figure 1 As shown, the perovskite solar cell includes a conductive glass layer, an electron transport layer, a perovskite layer, a hole transport layer and a metal electrode layer arranged sequentially from bottom to top. Wherein, the above-mentioned conductive glass layer is used to collect electrons in the electron transport layer. The electron transport layer is used to transport electrons from the perovskite layer to the conductive glass layer. The above perovskite layer is used to absorb sunlight energy and is excited to form hole-electron pairs; the above hole transport layer is used to transport the holes generated by the perovskite layer. From the hole to the metal electrode layer, the metal electrode layer is used to receive the holes transported from the hole transport layer and recombine with the electrons from the conductive gl...

Embodiment 2

[0023] figure 2 Schematic diagram of the structure of the perovskite solar cell provided in Example 2 of the present application. Such as figure 2 As shown, compared with the structure of the perovskite solar cell provided in Example 1, the perovskite solar cell provided in this embodiment can also include an interface modification layer, and the above interface modification layer is arranged between the electron transport layer and the perovskite layer Between, the material of the interface modification layer can be barium hydroxide. By adding a layer of Ba(OH) between the electron transport layer and the perovskite layer 2 The interface modification layer, on the one hand, can improve the charge collection efficiency, reduce the carrier recombination center, increase the number of carriers, and improve the photoelectric performance; on the other hand, it can also optimize the crystal quality of the perovskite layer and the film interface, so that The density of pores an...

Embodiment 3

[0025] The following description is as follows figure 1 The fabrication method of the perovskite solar cell with the structure shown. image 3 It is a schematic diagram of the preparation method of the perovskite solar cell provided in Example 3 of the present application. Such as image 3 As shown, the method includes: step S101: preparing an electron transport layer on the conductive glass layer; wherein, the material of the electron transport layer is tin oxide doped with M metal, and the M metal is a rare earth metal, an alkali metal or an alkaline earth Metal. Step S102: preparing a perovskite layer on the electron transport layer; step S103: preparing a hole transport layer on the perovskite layer; step S104: evaporating a metal electrode layer on the hole transport layer. The specific content of the above steps will not be repeated here, and reference may be made to the specific content of the steps in Embodiment 4 below.

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Abstract

The invention relates to a perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a conductive glass layer, an electron transport layer, a perovskite layer, a holetransport layer and a metal electrode layer which are sequentially arranged from bottom to top, wherein the electron transport layer is made of tin oxide doped with M metal, and the M metal is rare earth metal, alkali metal or alkaline earth metal. According to the perovskite solar cell and the preparation method thereof provided by the invention, the charge carrier concentration of the electrontransport layer can be significantly improved while the energy levels can be matched, so that the electron transport capability is enhanced, and the photoelectric conversion efficiency of the perovskite solar cell is improved.

Description

technical field [0001] The present application relates to the technical field of solar energy, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] In recent years, the energy crisis has become more and more urgent, and the research on clean energy has become more important. Clean energy includes solar energy, wind energy, and hydroelectric energy. Among them, photovoltaic cells can convert solar energy into electrical energy and have a broad scenario. The development of solar energy technology has roughly gone through three stages: the first generation of solar cells mainly refers to monocrystalline silicon and polycrystalline silicon solar cells, and their photoelectric conversion efficiencies in the laboratory have reached 25% and 20.4% respectively; the second generation of solar cells mainly includes Amorphous silicon thin film battery and polycrystalline silicon thin film battery. The third generation of solar cells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K30/15Y02E10/549
Inventor 魏文超唐泽国
Owner 北京宏泰创新科技有限公司
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