The synergistic effect of non-stoichiometry and Sb-doping on air-stable -CsPbI3 for efficient carbon-based perovskite solar cellsElectronic supplementary information (ESI) available. See DOI: 10.1039/c7nr09657g

The synergistic effect of non-stoichiometry and Sb-doping on air-stable -CsPbI3 for efficient... -CsPbI3 with the most suitable band gap for all-inorganic perovskite solar cell (PSC) application faces an issue of phase instability at low temperature in an air atmosphere. Herein, through stoichiometric investigation, -CsPbI3 is successfully obtained with excess CsI at 110 C in an air atmosphere. By doping -CsPbI3 with Sb, phase stability is further enhanced and the film morphology is also improved. Carbon-based perovskite solar cells (C-PSCs) based on CsPb0.96Sb0.04I3 achieve a promising power conversion efficiency (PCE) of 5.18%, a record value for -CsPbI3-based PSCs without hole transport materials. Significantly, the CsPb0.96Sb0.04I3 C-PSCs retain 93% of the initial PCE after 37 days of storage in an air atmosphere. Therefore, the synergistic effect of non-stoichiometry and Sb-doping presents a promising strategy to design all-inorganic lead halide PSCs with high performance and stability. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nanoscale Royal Society of Chemistry

The synergistic effect of non-stoichiometry and Sb-doping on air-stable -CsPbI3 for efficient carbon-based perovskite solar cellsElectronic supplementary information (ESI) available. See DOI: 10.1039/c7nr09657g

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Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
2040-3364
D.O.I.
10.1039/c7nr09657g
Publisher site
See Article on Publisher Site

Abstract

-CsPbI3 with the most suitable band gap for all-inorganic perovskite solar cell (PSC) application faces an issue of phase instability at low temperature in an air atmosphere. Herein, through stoichiometric investigation, -CsPbI3 is successfully obtained with excess CsI at 110 C in an air atmosphere. By doping -CsPbI3 with Sb, phase stability is further enhanced and the film morphology is also improved. Carbon-based perovskite solar cells (C-PSCs) based on CsPb0.96Sb0.04I3 achieve a promising power conversion efficiency (PCE) of 5.18%, a record value for -CsPbI3-based PSCs without hole transport materials. Significantly, the CsPb0.96Sb0.04I3 C-PSCs retain 93% of the initial PCE after 37 days of storage in an air atmosphere. Therefore, the synergistic effect of non-stoichiometry and Sb-doping presents a promising strategy to design all-inorganic lead halide PSCs with high performance and stability.

Journal

NanoscaleRoyal Society of Chemistry

Published: May 18, 2018

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