Quantum dot-induced phase stabilization of  α-CsPbI3 perovskite for high-efficiency photovoltaics

Swarnkar, A.; Marshall, A. R.; Sanehira, E. M.; Chernomordik, B. D.; Moore, D. T.; Christians, J. A.; Chakrabarti, T.; Luther, J. M.

doi:10.1126/science.aag2700

Title: Quantum dot-induced phase stabilization of α-CsPbI₃ perovskite for high-efficiency photovoltaics

Abstract

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.

Authors:: Swarnkar, A.; Marshall, A. R.; Sanehira, E. M.; Chernomordik, B. D.; Moore, D. T.; Christians, J. A.; Chakrabarti, T.; Luther, J. M.

Publication Date:: Thu Oct 06 00:00:00 EDT 2016

Research Org.:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Science (SC)

OSTI Identifier:: 1352987

Alternate Identifier(s):: OSTI ID: 1328731

Report Number(s):: NREL/JA-5900-66542
Journal ID: ISSN 0036-8075; 354/6308/92

Grant/Contract Number:: AC36-08GO28308

Resource Type:: Published Article

Journal Name:: Science

Additional Journal Information:: Journal Name: Science 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, A., Marshall, A. R., Sanehira, E. M., Chernomordik, B. D., Moore, D. T., Christians, J. A., Chakrabarti, T., and Luther, J. M. Quantum dot-induced phase stabilization of  α-CsPbI3 perovskite for high-efficiency photovoltaics.  United States: N. p., 2016. 
Web.  doi:10.1126/science.aag2700.

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                    Swarnkar, A., Marshall, A. R., Sanehira, E. M., Chernomordik, B. D., Moore, D. T., Christians, J. A., Chakrabarti, T., & Luther, J. M. Quantum dot-induced phase stabilization of  α-CsPbI3 perovskite for high-efficiency photovoltaics.  United States.  https://doi.org/10.1126/science.aag2700

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                    Swarnkar, A., Marshall, A. R., Sanehira, E. M., Chernomordik, B. D., Moore, D. T., Christians, J. A., Chakrabarti, T., and Luther, J. M. Thu .  
"Quantum dot-induced phase stabilization of  α-CsPbI3 perovskite for high-efficiency photovoltaics".  United States.  https://doi.org/10.1126/science.aag2700.

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@article{osti_1352987,

  title        = {Quantum dot-induced phase stabilization of  α-CsPbI3 perovskite for high-efficiency photovoltaics},

  author       = {Swarnkar, A. and Marshall, A. R. and Sanehira, E. M. and Chernomordik, B. D. and Moore, D. T. and Christians, J. A. and Chakrabarti, T. and Luther, J. 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         = {Thu Oct 06 00:00:00 EDT 2016},

  month        = {Thu Oct 06 00:00:00 EDT 2016}

}

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Title: Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics

Abstract

Citation Formats

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Title: Quantum dot-induced phase stabilization of α-CsPbI₃ perovskite for high-efficiency photovoltaics

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