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In situ investigation of halide incorporation into perovskite solar cells

Published online by Cambridge University Press:  10 July 2017

Jeffery A. Aguiar Open the ORCID record for Jeffery A. Aguiar [Opens in a new window] ,
Nooraldeen R. Alkurd ,
Sarah Wozny ,
Maulik K. Patel ,
Mengjin Yang ,
Weilie Zhou ,
Mowafak Al-Jassim ,
Terry G. Holesinger ,
Kai Zhu  and
Joseph J. Berry
Jeffery A. Aguiar*
Affiliation:
Materials Science and Technology Directorate, National Renewable Energy Laboratory, Golden, CO 80401, USA Materials Science and Engineering, University of Utah, Salt Lake City, UT 84122, USA Fuel Design and Development Directorate, Idaho National Laboratory, Idaho Falls, ID 83401, USA
Nooraldeen R. Alkurd
Affiliation:
Advanced Materials Institute, University of New Orleans, New Orleans, LA 70122, USA Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO 80401, USA
Sarah Wozny
Affiliation:
Advanced Materials Institute, University of New Orleans, New Orleans, LA 70122, USA
Maulik K. Patel
Affiliation:
Department of Material Science and Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
Mengjin Yang
Affiliation:
Materials Science and Technology Directorate, National Renewable Energy Laboratory, Golden, CO 80401, USA
Weilie Zhou
Affiliation:
Advanced Materials Institute, University of New Orleans, New Orleans, LA 70122, USA
Mowafak Al-Jassim
Affiliation:
Materials Science and Technology Directorate, National Renewable Energy Laboratory, Golden, CO 80401, USA
Terry G. Holesinger
Affiliation:
Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
Kai Zhu
Affiliation:
Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO 80401, USA
Joseph J. Berry
Affiliation:
Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO 80401, USA
*
Address all correspondence to Jeffery A. Aguiar Jeffery.Aguiar@inl.gov
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Abstract

Here we report on the material chemistry following crystallization in the presence of water vapor of chlorinated formamidinium lead-triiodide (NH2CH = NH2PbI3−xClx) perovskite films. We found in-situ exposure to water vapor reduces, or possibly eliminates, the retention of chlorine (Cl) inside NH2CH = NH2PbI3−xClx crystals. There is a strong tendency toward Cl volatility, which indicates the sensitivity of these materials for their integration into solar cells. The requisite for additional efforts focused on the mitigation of water vapor is reported. Based on the in situ results, hot casting (<100 °C) in dry conditions demonstrates improved film coverage and Cl retention with efficiencies reaching 12.07%.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 3 , September 2017 , pp. 575 - 582
Copyright
Copyright © Materials Research Society 2017 

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