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Title: Low Temperature Solution‐Processed Sb:SnO 2 Nanocrystals for Efficient Planar Perovskite Solar Cells

Abstract

Abstract Inorganic metal oxide electron‐transport layers (ETLs) have the potential to yield perovskite solar cells with improved stability, but generally need high temperature to form conductive and defect‐less forms, which is not compatible with the fabrication of flexible and tandem solar cells. Here, we demonstrate a facile strategy for developing efficient inorganic ETLs by doping SnO 2 nanocrystals (NCs) with a small amount of Sb using a low‐temperature solution‐processed method. The electrical conductivity was remarkably enhanced by Sb‐doping, which increased the carrier concentration in Sb:SnO 2 NCs. Moreover, the upward shift of the Fermi level owing to doping results in improved energy level alignment, which led to reduced charge recombination, and thus longer electron recombination lifetime and improved open‐circuit voltage ( V OC ). Therefore, Sb‐doping of SnO 2 significantly enhanced the photovoltaic performance of planar perovskite devices by increasing the fill factor and V OC , and reducing photocurrent hysteresis, extending the potential application of low‐temperature‐processed ETLs in future flexible and tandem solar cells.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Department of Mechanical and Materials Engineering Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln Lincoln USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1401469
Grant/Contract Number:  
EE0006709
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
ChemSusChem
Additional Journal Information:
Journal Name: ChemSusChem Journal Volume: 9 Journal Issue: 18; Journal ID: ISSN 1864-5631
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Bai, Yang, Fang, Yanjun, Deng, Yehao, Wang, Qi, Zhao, Jingjing, Zheng, Xiaopeng, Zhang, Yang, and Huang, Jinsong. Low Temperature Solution‐Processed Sb:SnO 2 Nanocrystals for Efficient Planar Perovskite Solar Cells. Germany: N. p., 2016. Web. doi:10.1002/cssc.201600944.
Bai, Yang, Fang, Yanjun, Deng, Yehao, Wang, Qi, Zhao, Jingjing, Zheng, Xiaopeng, Zhang, Yang, & Huang, Jinsong. Low Temperature Solution‐Processed Sb:SnO 2 Nanocrystals for Efficient Planar Perovskite Solar Cells. Germany. https://doi.org/10.1002/cssc.201600944
Bai, Yang, Fang, Yanjun, Deng, Yehao, Wang, Qi, Zhao, Jingjing, Zheng, Xiaopeng, Zhang, Yang, and Huang, Jinsong. Fri . "Low Temperature Solution‐Processed Sb:SnO 2 Nanocrystals for Efficient Planar Perovskite Solar Cells". Germany. https://doi.org/10.1002/cssc.201600944.
@article{osti_1401469,
title = {Low Temperature Solution‐Processed Sb:SnO 2 Nanocrystals for Efficient Planar Perovskite Solar Cells},
author = {Bai, Yang and Fang, Yanjun and Deng, Yehao and Wang, Qi and Zhao, Jingjing and Zheng, Xiaopeng and Zhang, Yang and Huang, Jinsong},
abstractNote = {Abstract Inorganic metal oxide electron‐transport layers (ETLs) have the potential to yield perovskite solar cells with improved stability, but generally need high temperature to form conductive and defect‐less forms, which is not compatible with the fabrication of flexible and tandem solar cells. Here, we demonstrate a facile strategy for developing efficient inorganic ETLs by doping SnO 2 nanocrystals (NCs) with a small amount of Sb using a low‐temperature solution‐processed method. The electrical conductivity was remarkably enhanced by Sb‐doping, which increased the carrier concentration in Sb:SnO 2 NCs. Moreover, the upward shift of the Fermi level owing to doping results in improved energy level alignment, which led to reduced charge recombination, and thus longer electron recombination lifetime and improved open‐circuit voltage ( V OC ). Therefore, Sb‐doping of SnO 2 significantly enhanced the photovoltaic performance of planar perovskite devices by increasing the fill factor and V OC , and reducing photocurrent hysteresis, extending the potential application of low‐temperature‐processed ETLs in future flexible and tandem solar cells.},
doi = {10.1002/cssc.201600944},
journal = {ChemSusChem},
number = 18,
volume = 9,
place = {Germany},
year = {Fri Aug 26 00:00:00 EDT 2016},
month = {Fri Aug 26 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/cssc.201600944

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Cited by: 152 works
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