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4. Understanding the Role of the Electron-Transport Layer in Highly Efficient Planar Perovskite Solar Cells

Author

Kun Luo, Jun Mei, Gang Wang, Cheng Liao, Jiang Liu, Ye Qinyan, and He Xulin

Subjects
Electron transport layer, Materials science, business.industry, Nanotechnology, 02 engineering and technology, Hybrid solar cell, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Electron transport chain, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Planar, Band bending, Photovoltaics, Optoelectronics, Fill factor, Physical and Theoretical Chemistry, 0210 nano-technology, business
Abstract

Solar cells based on perovskite absorbers are rapidly emerging as attractive candidates for photovoltaics development. Understanding the role of the electron-transport layer (ETL) is very important to obtain highly efficient perovskite solar cells. Herein, the effect of the ETL on device performance in planar perovskite solar cells is investigated in detail, and the band bending in different situations is discussed. The ET barrier is shown to be responsible for the poor fill factor (FF) of J-V curves. Introduction of a thin bathocuproine interlayer increases the interface inversion and results in an increase of FF from 56 to 76 %. Some experimental and theoretical results verify these conclusions. Furthermore, this study can provide an interface-engineering strategy to improve device performance.

Published
2017
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7. Solution‐Processed MAPbBr 3 and CsPbBr 3 Single‐Crystal Detectors with Improved X‐Ray Sensitivity via Interfacial Engineering

Author

Wentao Zuo, Guoqiang Liu, Kun Luo, He Xulin, Ye Qinyan, Cheng Liao, Zhengfang Fan, and Jiang Liu

Subjects
X-RAY SENSITIVITY, Materials science, business.industry, Detector, Surfaces and Interfaces, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Solution processed, Materials Chemistry, Optoelectronics, Electrical and Electronic Engineering, business, Interfacial engineering, Single crystal
Published
2020
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9. Tuning Bandgap of Mixed-Halide Perovskite for Improved Photovoltaic Performance Under Monochromatic-Light Illumination

Author

Jiang Liu, He Xulin, Zhengfang Fan, Xu Zhang, Kun Luo, Zhen Song, Cheng Liao, Wentao Zuo, and Ye Qinyan

Subjects
Materials science, business.industry, Band gap, Photovoltaic system, Halide, Surfaces and Interfaces, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Materials Chemistry, Optoelectronics, Monochromatic color, Electrical and Electronic Engineering, business, Perovskite (structure)
Published
2019
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