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

Swarnkar, Abhishek ; Marshall, Ashley R. ; Sanehira, Erin M. ; Chernomordik, Boris D. ; Moore, David T. ; Christians, Jeffrey A. ; Chakrabarti, Tamoghna ; Luther, Joseph M.

Science (American Association for the Advancement of Science), 2016-10, Vol.354 (6308), p.92-95 [Periódico revisado por pares]

United States: American Association for the Advancement of Science

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Título:
Quantum dot-induced phase stabilization of α-CsPbI₃ perovskite for high-efficiency photovoltaics
Autor: Swarnkar, Abhishek ; Marshall, Ashley R. ; Sanehira, Erin M. ; Chernomordik, Boris D. ; Moore, David T. ; Christians, Jeffrey A. ; Chakrabarti, Tamoghna ; Luther, Joseph M.
Assuntos: Cations ; Electric potential ; Energy gaps (solid state) ; MATERIALS SCIENCE ; nanocrystal solar cells ; perovskite solar cells ; Perovskites ; Photonic band gaps ; Photovoltaic cells ; quantum dot solar cells ; Quantum dots ; Solar cells ; SOLAR ENERGY
É parte de: Science (American Association for the Advancement of Science), 2016-10, Vol.354 (6308), p.92-95
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
USDOE Office of Science (SC)
NREL/JA-5900-66542
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
AC36-08GO28308
Descrição: We show nanoscale phase stabilization of CsPbl₃ quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices. CsPbl₃ is an all-inorganic analog to the hybrid organic cation halide perovskites, but the cubic phase of bulk CsPbl₃ (α-CsPbl₃)—the variant with desirable band gap—is only stable at high temperatures. We describe the formation of α-CsPbl₃ 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%. These devices also function as light-emitting diodes with low turn-on voltage and tunable emission.
Editor: United States: American Association for the Advancement of Science
Idioma: Inglês

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

Swarnkar, Abhishek ; Marshall, Ashley R. ; Sanehira, Erin M. ; Chernomordik, Boris D. ; Moore, David T. ; Christians, Jeffrey A. ; Chakrabarti, Tamoghna ; Luther, Joseph M.

United States: American Association for the Advancement of Science

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