Perovskite solar cell based on nano grass-shaped mesoporous layer and preparation method thereof

A solar cell and perovskite technology, applied in nanotechnology, circuits, photovoltaic power generation, etc., can solve problems such as limiting development, achieve enhanced transmission and extraction, improved performance, and low cost

Active Publication Date: 2020-04-17
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its inert 101 plane, a large number of closed pore-like structures, and the formation of a large number of grain boundaries with perovskite limit its further development.

Method used

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  • Perovskite solar cell based on nano grass-shaped mesoporous layer and preparation method thereof
  • Perovskite solar cell based on nano grass-shaped mesoporous layer and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0031] The structure of a high-efficiency perovskite solar cell based on nanograss-like mesoporous layers figure 1 As shown: 101 is a transparent substrate, 102 is a first electrode layer, 103 is an electron transport layer, 104 is a perovskite light absorption layer, 105 is a hole transport layer, and 106 is a second electrode layer. The transparent substrate is quartz glass; the first transparent electrode layer is ITO with a thickness of 180 nm; the electron transport layer is high-energy 001-face sheet-like single-crystal nanograss structure TiO 2 , with a thickness of 80 nm; the perovskite layer is Cs 0.05 (MA 0.13 FA 0.87 ) 0.95 Pb(I 0.87 Br 0.13 ) 3 , with a thickness of 450 nm; the hole transport layer is Spiro-OMeTAD with a thickness of 100 nm; the second electrode layer is gold with a thickness of 80 nm.

[0032] The preparation method of the perovskite solar cell in embodiment 1 is as follows:

[0033] ITO conductive glass is cleaned with glass cleaning solu...

Embodiment 2

[0035] The structure of a high-efficiency perovskite solar cell based on nanograss-like mesoporous layers is as follows from bottom to top: transparent substrate, first electrode layer, hole transport layer, perovskite light absorption layer, electron transport layer, second electrode layer. The transparent substrate is quartz glass; the first transparent electrode layer is ITO with a thickness of 180nm; the hole transport layer is flaky single crystal nanograss NiO x , with a thickness of 40 nm; the perovskite layer is Cs 0.05 (MA 0.13 FA 0.87 ) 0.95 Pb(I 0.87 Br 0.13 ) 3 , with a thickness of 450 nm; the electron transport layer is PCBM with a thickness of 50 nm; the second electrode layer is silver with a thickness of 80 nm.

[0036] The preparation method of the perovskite solar cell in embodiment 2 is as follows:

[0037] The ITO conductive glass is cleaned with glass cleaning solution, acetone, and ethanol in sequence, and after drying, the residual organic matte...

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Abstract

The invention belongs to the field of semiconductor photoelectronic devices, and particularly relates to a perovskite solar cell based on a nano grass-shaped mesoporous layer and a preparation methodthereofl. The structure of the solar cell comprises a transparent substrate, a first electrode layer, a functional layer and a second electrode layer. the functional layer comprises an electron transport layer, a perovskite light absorption layer and a hole transport layer. The preparation method disclosed by the invention comprises the following steps: growing a metal oxide with a sheet-shaped single crystal nano grass structure in the vertical direction of a transparent conductive glass substrate by adopting a liquid phase deposition method, and taking the metal oxide as an electron or holetransport layer material of the solar cell, wherein the surface of the sheet-shaped single crystal nano grass-shaped metal oxide is composed of an atomic structure, the chemical energy is high and surface coordination of the transmission layer and the perovskite can be promoted to form optimal interface coupling, thereby providing a large-area interface and a high energy potential for exciton dissociation, carrier injection and transportation, improving the carrier interface dynamic process and improving the photoelectric conversion efficiency of the perovskite solar cell.

Description

technical field [0001] The invention belongs to the technical field of semiconductor optoelectronic devices, and in particular relates to a preparation method of a high-efficiency perovskite solar cell based on a nano grass-like mesoporous layer. Background technique [0002] Solar energy is an important part of renewable and clean energy. Effective use of it can not only meet people's growing energy demand, but also help alleviate environmental pollution caused by mining fossils. Organic-inorganic hybrid perovskite cells are considered to be the most promising next-generation photovoltaic technology due to their advantages such as simple process, low cost, and high energy conversion efficiency. After nearly ten years of rapid development, its energy conversion efficiency has increased from the initial 3.8% to the current highest certified 25.2%. This efficiency is already comparable to that of silicon-based solar cells. [0003] In perovskite solar cells, the conditions o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48B82Y40/00
CPCB82Y40/00H10K71/12H10K30/35H10K30/30H10K2102/00Y02E10/549
Inventor 詹义强阿克拉贾斯·乌马尔张欣刘凯
Owner FUDAN UNIV
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