Trihydrate lead acetate doped perovskite solar cell and preparation method thereof

A technology of solar cells and acetic acid trihydrate, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of increasing electron-hole recombination points and high environmental requirements, reducing recombination, large grains, and improving grain crystallinity. Effect

Inactive Publication Date: 2017-11-21
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high environmental requirements of perovskite, a large number of defects will appear in the preparation of perovskite light-absorbing films, which will increase the recombination points of electrons and holes.

Method used

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  • Trihydrate lead acetate doped perovskite solar cell and preparation method thereof
  • Trihydrate lead acetate doped perovskite solar cell and preparation method thereof
  • Trihydrate lead acetate doped perovskite solar cell and preparation method thereof

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Embodiment 1

[0043] In this embodiment, a method for preparing a perovskite solar cell doped with lead acetate trihydrate, steps 2 to 4 are the same as those in the comparative example, the difference is that when preparing the perovskite solution in step 1, 1% molar percentage of Lead acetate trihydrate ((CH 3 COO) 2 Pb·3H 2 O), stirred at 60°C for 4h until it was completely dissolved and turned into a clear yellow solution, cooled to room temperature for later use.

Embodiment 2

[0045] In this embodiment, a method for preparing a perovskite solar cell doped with lead acetate trihydrate, steps 2 to 4 are the same as those in the comparative example, the difference is that when preparing the perovskite solution in step 1, 3% by mole percent of Lead acetate trihydrate ((CH3COO)2Pb·3H2O), stirred at 60°C for 4h until it was completely dissolved and turned into a clear yellow solution, cooled to room temperature for later use.

Embodiment 3

[0047] In this embodiment, a method for preparing a perovskite solar cell doped with lead acetate trihydrate, steps 2 to 4 are the same as those in the comparative example, the difference is that when preparing the perovskite solution in step 1, 5% molar percentage of Lead acetate trihydrate ((CH3COO)2Pb·3H2O), stirred at 60°C for 4h until it was completely dissolved and turned into a clear yellow solution, cooled to room temperature for later use.

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Abstract

The invention relates to the field of perovskite solar cells and provides a trihydrate lead acetate doped perovskite solar cell and preparation method thereof. The perovskite solar cell includes a transparent electrode, an electron transmission layer, a perovskitelight absorption layer, a cavity transmission layer and a metal electrode in sequence. The perovskite light absorption layer is obtained by doping trihydrate lead acetate in a perovskite polymeric pecursor solution. The doped trihydratelead acetate achieves an effect of passivating grain boundary, so that the composition of electron cavities is inhibited, the grain uniformity is improved and the mass of perovskite films is improved; and thus the photoelectric conversion efficiency of the perovskite cell is improved substantially. According to the invention, the pervskite light absorption layer enables substantial increase of battery efficiency from 15% to over 18%. Besides, the method is simple and easy in practice, low in preparation cost and wide in application prospect.

Description

technical field [0001] The invention relates to the field of perovskite solar cells, in particular to a perovskite solar cell doped with lead acetate trihydrate and a preparation method thereof. Background technique [0002] With the rapid economic and social development in today's world, the demand for energy continues to grow, reaching a speed never before seen in human history. With the continuous consumption of traditional fossil energy, the energy crisis has increasingly become a bottleneck restricting economic and social development. More and more countries are looking for cheaper and clean energy to reduce the consumption of traditional fossil energy. Among the three energy conversions of photothermal, photoelectric and photochemical energy, photoelectric energy conversion is the most popular, especially the photovoltaic industry that has been spawned has become the most promising industry. [0003] The research on perovskite solar cells has become a hot research to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/451Y02E10/549Y02P70/50
Inventor 闫小琴郭艳李明华张汝晓
Owner UNIV OF SCI & TECH BEIJING
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