In-situ prepared substrate, dense layer and porous layer integrated perovskite solar cell and method thereof

Abstract

The invention discloses an in-situ prepared substrate, a dense layer and a porous layer integrated perovskite solar cell and a method thereof, and belongs to the technical field of solar cells. A layer of porous morphology is formed on a metal substrate by chemical etching, a base electron transport layer integrated electrode is formed by heating and oxidizing, then a perovskite layer and a hole transport layer are deposited in turn, and finally thin gold is vapor-deposited as an electrode. The perovskite solar cell can have the photoelectric conversion efficiency of 9.32%, the open circuit voltage is 0.89V, the short circuit current density is 18.11mA / cm2, and the filling factor is 0.58. The perovskite solar cell of the structure uses the cheap metal substrate as the electrode, the cell preparation process is simplified while the cell cost is reduced, and commercialization of the perovskite solar cell is facilitated.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to an in-situ preparation substrate, a dense layer and a porous layer integrated perovskite solar cell and a method thereof. Background technique [0002] At present, the energy problem is still one of the problems restricting social development. Environmental pollution and resource shortage are the current problems faced by human beings. Data show that 80%-85% of human energy supply currently comes from traditional fossil fuels. Renewable energy has become the direction of future energy development because of its sustainability, cleanliness and environmental protection, and has attracted widespread attention. Among many clean energy sources such as hydrogen energy, wind energy, and tidal energy, solar energy is considered to be one of the most important new energy sources today because of its advantages such as abundant reserves and no geographical restrictions. [0003] Photo...

AI Technical Summary

Problems solved by technology

FTO conductive glass, TiO 2 Dense layer, TiO 2 The cost of electron transport layers such as porous layers is expensive, and the preparation process is complicated, which limits the industrial development of perovskite solar cells

[0005] In terms of solving the expensive substrate, some researchers have carried out the following work. For example, Fudan University has prepared a linear perovskite solar cell. They have prepared a perovskite solar cell on stainless steel wire and titanium wire, which can be woven into clothing. However, the light-receiving area of ​​this filamentary metal base battery is only half, which limits its efficiency [2014102561867, CN201510653640.7, CN201610270624.4]

Sheng Chuanxi et al. prepared a perovskite solar cell on a stainless steel substrate, using 20nm thin silver as the back electrode, and obtained a photoelectric conversion efficiency of 0.885% [CN201510975591.9]. This cell also requires spin-coated dense layer and porous layer materials Did not achieve the effect of simplifying the battery structure

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