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Solution-Processed Nb:SnO2 Electron Transport Layer for Efficient Planar Perovskite Solar Cells

Ren, Xiaodong, Yang, Dong, Yang, Zhou, Feng, Jiangshan, Zhu, Xuejie, Niu, Jinzhi, Liu, Yucheng, Zhao, Wangen, Liu, Shengzhong Frank·2017·ACS Applied Materials & Interfaces

DOI 10.1021/acsami.6b13362

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Abstract

Electron transport layer (ETL), facilitating charge carrier separation and electron extraction, is a key component in planar perovskite solar cells (PSCs). We developed an effective ETL using low-temperature solution-processed Nb-doped SnO 2 (Nb:SnO 2 ). Compared to the pristine SnO 2, the power conversion efficiency of PSCs based on Nb:SnO 2 ETL is raised to 17.57% from 15.13%. The splendid performance is attributed to the excellent optical and electronic properties of the Nb:SnO 2 material, such as smooth surface, high electron mobility, appropriate electrical conductivity, therefore making a better growth platform for a high quality perovskite absorber layer. Experimental analyses reveal that the Nb:SnO 2 ETL significantly enhances the electron extraction and effectively suppresses charge recombination, leading to improved solar cell performance.

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See all 355

Authors: Ren, X., Yang, D., Yang, Z., Feng, J., Zhu, X., Niu, J., Liu, Y., Zhao, W., & Liu, S. F.
Venue: ACS Applied Materials & Interfaces
Publisher: American Chemical Society (ACS)
Published: 2017-01-12
Volume: 9
Issue: 3
Pages: 2421-2429
ISSN: 1944-8244 (ISSN-L)
1944-8252
DOI: 10.1021/acsami.6b13362
OpenAlex: W2565013471
Cited by: 355
References: 54
FWCI: 19.97
Type: journal article
Language: en
Open access: closed

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Solution-Processed Nb:SnO2 Electron Transport Layer for Efficient Planar Perovskite Solar Cells

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