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Title: Quantum Dot-Induced Phase Stabilization of ..alpha..-CsPbI3 Perovskite for High-Efficiency Photovoltaics

Abstract

Here, we show nanoscale phase stabilization of CsPbI 3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices. CsPbI 3 is an all-inorganic analog to the hybrid organic cation halide perovskites, but the cubic phase of bulk CsPbI3 (..alpha..-CsPbI 3) -- the variant with desirable band gap -- is only stable at high temperatures. We also describe the formation of ..alpha..-CsPbI 3 QD films that are phase-stable for months in ambient air. The films exhibit long-range electronic transport and were used to fabricate colloidal perovskite QD photovoltaic cells with an open-circuit voltage of 1.23 volts and efficiency of 10.77%. Furthermore, these devices function as light-emitting diodes with low turn-on voltage and tunable emission.

Authors:
 [1];  [2];  [3];  [4];  [4];  [4];  [5];  [4]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science; Indian Inst. of Science Education and Research (IISER), Pune (India). Dept. of Chemistry
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science; Univ. of Colorado, Boulder, CO (United States). Dept. of Chemistry and Biochemistry
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science; Univ. of Washington, Seattle, WA (United States). Dept. of Electrical Engineering
  4. National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science
  5. Colorado School of Mines, Golden, CO (United States). Metalurgical and Materials Engineering
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1352987
Alternate Identifier(s):
OSTI ID: 1328731
Report Number(s):
NREL/JA-5900-66542
Journal ID: ISSN 0036-8075
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article: Published Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 354; Journal Issue: 6308; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite solar cells; quantum dot solar cells; nanocrystal solar cells

Citation Formats

Swarnkar, Abhishek, Marshall, Ashley R., Sanehira, Erin M., Chernomordik, Boris D., Moore, David T., Christians, Jeffrey A., Chakrabarti, Tamoghna, and Luther, Joseph M.. Quantum Dot-Induced Phase Stabilization of ..alpha..-CsPbI3 Perovskite for High-Efficiency Photovoltaics. United States: N. p., 2016. Web. doi:10.1126/science.aag2700.
Swarnkar, Abhishek, Marshall, Ashley R., Sanehira, Erin M., Chernomordik, Boris D., Moore, David T., Christians, Jeffrey A., Chakrabarti, Tamoghna, & Luther, Joseph M.. Quantum Dot-Induced Phase Stabilization of ..alpha..-CsPbI3 Perovskite for High-Efficiency Photovoltaics. United States. doi:10.1126/science.aag2700.
Swarnkar, Abhishek, Marshall, Ashley R., Sanehira, Erin M., Chernomordik, Boris D., Moore, David T., Christians, Jeffrey A., Chakrabarti, Tamoghna, and Luther, Joseph M.. Fri . "Quantum Dot-Induced Phase Stabilization of ..alpha..-CsPbI3 Perovskite for High-Efficiency Photovoltaics". United States. doi:10.1126/science.aag2700.
@article{osti_1352987,
title = {Quantum Dot-Induced Phase Stabilization of ..alpha..-CsPbI3 Perovskite for High-Efficiency Photovoltaics},
author = {Swarnkar, Abhishek and Marshall, Ashley R. and Sanehira, Erin M. and Chernomordik, Boris D. and Moore, David T. and Christians, Jeffrey A. and Chakrabarti, Tamoghna and Luther, Joseph M.},
abstractNote = {Here, we show nanoscale phase stabilization of CsPbI3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices. CsPbI3 is an all-inorganic analog to the hybrid organic cation halide perovskites, but the cubic phase of bulk CsPbI3 (..alpha..-CsPbI3) -- the variant with desirable band gap -- is only stable at high temperatures. We also describe the formation of ..alpha..-CsPbI3 QD films that are phase-stable for months in ambient air. The films exhibit long-range electronic transport and were used to fabricate colloidal perovskite QD photovoltaic cells with an open-circuit voltage of 1.23 volts and efficiency of 10.77%. Furthermore, these devices function as light-emitting diodes with low turn-on voltage and tunable emission.},
doi = {10.1126/science.aag2700},
journal = {Science},
number = 6308,
volume = 354,
place = {United States},
year = {Fri Oct 07 00:00:00 EDT 2016},
month = {Fri Oct 07 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1126/science.aag2700

Citation Metrics:
Cited by: 190 works
Citation information provided by
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Works referenced in this record:

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