Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Choi, Jongmin | - |
dc.contributor.author | Choi, Min-Jae | - |
dc.contributor.author | Kim, Junghwan | - |
dc.contributor.author | Dinic, Filip | - |
dc.contributor.author | Todorovic, Petar | - |
dc.contributor.author | Sun, Bin | - |
dc.contributor.author | Wei, Mingyang | - |
dc.contributor.author | Baek, Se-Woong | - |
dc.contributor.author | Hoogland, Sjoerd | - |
dc.contributor.author | de Arquer, F. Pelayo Garcia | - |
dc.contributor.author | Voznyy, Oleksandr | - |
dc.contributor.author | Sargent, Edward H. | - |
dc.date.accessioned | 2020-02-27T09:12:12Z | - |
dc.date.available | 2020-02-27T09:12:12Z | - |
dc.date.created | 2020-01-29 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/11422 | - |
dc.description.abstract | Colloidal quantum dots (CQDs) are promising materials for photovoltaic (PV) applications owing to their size-tunable bandgap and solution processing. However, reports on CQD PV stability have been limited so far to storage in the dark; or operation illuminated, but under an inert atmosphere. CQD PV devices that are stable under continuous operation in air have yet to be demonstrated-a limitation that is shown here to arise due to rapid oxidation of both CQDs and surface passivation. Here, a stable CQD PV device under continuous operation in air is demonstrated by introducing additional potassium iodide (KI) on the CQD surface that acts as a shielding layer and thus stands in the way of oxidation of the CQD surface. The devices (unencapsulated) retain >80% of their initial efficiency following 300 h of continuous operation in air, whereas CQD PV devices without KI lose the amount of performance within just 21 h. KI shielding also provides improved surface passivation and, as a result, a higher power conversion efficiency (PCE) of 12.6% compared with 11.4% for control devices. | - |
dc.language | English | - |
dc.publisher | Wiley-VCH Verlag | - |
dc.title | Stabilizing Surface Passivation Enables Stable Operation of Colloidal Quantum Dot Photovoltaic Devices at Maximum Power Point in an Air Ambient | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/adma.201906497 | - |
dc.identifier.wosid | 000506705500001 | - |
dc.identifier.scopusid | 2-s2.0-85077910200 | - |
dc.identifier.bibliographicCitation | Advanced Materials, v.32, no.7, pp.1906497 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | device stability | - |
dc.subject.keywordAuthor | oxidation | - |
dc.subject.keywordAuthor | solar cells | - |
dc.subject.keywordAuthor | colloidal quantum dots | - |
dc.subject.keywordAuthor | continuous operation | - |
dc.subject.keywordPlus | DIFFUSION | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | PBS | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 1906497 | - |
dc.citation.title | Advanced Materials | - |
dc.citation.volume | 32 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.type.docType | Article | - |
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