Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics
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 (α-CsPb...
| Main Authors: | , , , , , , , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
American Association for the Advancement of Science
2016
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| _version_ | 1826306855227359232 |
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| author | Swarnkar, A Marshall, AR Sanehira, EM Chernomordik, BD Moore, DT Christians, JA Chakrabarti, T Luther, JM |
| author_facet | Swarnkar, A Marshall, AR Sanehira, EM Chernomordik, BD Moore, DT Christians, JA Chakrabarti, T Luther, JM |
| author_sort | Swarnkar, A |
| collection | OXFORD |
| description | 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 (α-CsPbI3)-the variant with desirable band gap-is only stable at high temperatures. We describe the formation of α-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%. These devices also function as light-emitting diodes with low turn-on voltage and tunable emission. |
| first_indexed | 2024-03-07T06:54:12Z |
| format | Journal article |
| id | oxford-uuid:fd93a25d-e351-402b-9173-14d570fc284c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:54:12Z |
| publishDate | 2016 |
| publisher | American Association for the Advancement of Science |
| record_format | dspace |
| spelling | oxford-uuid:fd93a25d-e351-402b-9173-14d570fc284c2022-03-27T13:29:49ZQuantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaicsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fd93a25d-e351-402b-9173-14d570fc284cEnglishSymplectic ElementsAmerican Association for the Advancement of Science2016Swarnkar, AMarshall, ARSanehira, EMChernomordik, BDMoore, DTChristians, JAChakrabarti, TLuther, JMWe 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 (α-CsPbI3)-the variant with desirable band gap-is only stable at high temperatures. We describe the formation of α-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%. These devices also function as light-emitting diodes with low turn-on voltage and tunable emission. |
| spellingShingle | Swarnkar, A Marshall, AR Sanehira, EM Chernomordik, BD Moore, DT Christians, JA Chakrabarti, T Luther, JM Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title | Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title_full | Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title_fullStr | Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title_full_unstemmed | Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title_short | Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics |
| title_sort | quantum dot induced phase stabilization of α cspbi3 perovskite for high efficiency photovoltaics |
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