Sequential deposition method fabricating carbonbased fully-inorganic perovskite solar cells

Hybrid organic-inorganic halide perovskite material has been considered as a potential candidate for various optoelectronic applications. However, their high sensitivity to the environment hampers the actual application. Hence the technology replacing the organic part of the hybrid solar cells needs...

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Bibliographic Details
Published in:Science China materials 2018, Vol.61 (1), p.73-79
Main Authors: Ding, Xihong, Ren, Yingke, Wu, Yahan, Xu, Yafeng, Zhu, Jun, Hayat, Tasawar, Alsaedi, Ahmed, Li, Zhaoqian, Huang, Yang, Dai, Songyuan
Format: Article
Language:English
Subjects:
Absorption spectra
Chemistry and Materials Science
Chemistry/Food Science
Deposition
Electron microscopy
Energy conversion efficiency
Evolution
Fourier transforms
Infrared spectra
Materials Science
Optoelectronic devices
Photovoltaic cells
Solar cells
Spectrum analysis
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Summary:Hybrid organic-inorganic halide perovskite material has been considered as a potential candidate for various optoelectronic applications. However, their high sensitivity to the environment hampers the actual application. Hence the technology replacing the organic part of the hybrid solar cells needs to be developed. Herein, we fabricated fullyinorganic carbon-based perovskite CsPbBr 3 solar cells via a sequential deposition method with a power conversion efficiency of 2.53% and long-time stability over 20 d under ambient air conditions without any encapsulation. An evolution process from tetragonal CsPb 2 Br 5 to CsPb 2 Br 5 -CsPbBr 3 composites to quasi-cubic CsPbBr 3 was found, which was investigated by scanning electron microscopy, X-ray diffraction spectra, UV-vis absorption spectra and Fourier transform infrared spectroscopy. Detailed evolution process was studied to learn more information about the formation process before 10 min. Our results are helpful to the development of inorganic perovskite solar cells and the CsPb 2 Br 5 based optoelectronic devices.
ISSN:2095-8226
2199-4501
DOI:10.1007/s40843-017-9117-4