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- Title
Highly Emissive Self‐Trapped Excitons in Fully Inorganic Zero‐Dimensional Tin Halides.
- Authors
Benin, Bogdan M.; Dirin, Dmitry N.; Morad, Viktoriia; Wörle, Michael; Yakunin, Sergii; Rainò, Gabriele; Nazarenko, Olga; Fischer, Markus; Infante, Ivan; Kovalenko, Maksym V.
- Abstract
Abstract: The spatial localization of charge carriers to promote the formation of bound excitons and concomitantly enhance radiative recombination has long been a goal for luminescent semiconductors. Zero‐dimensional materials structurally impose carrier localization and result in the formation of localized Frenkel excitons. Now the fully inorganic, perovskite‐derived zero‐dimensional SnII material Cs4SnBr6 is presented that exhibits room‐temperature broad‐band photoluminescence centered at 540 nm with a quantum yield (QY) of 15±5 %. A series of analogous compositions following the general formula Cs4−xAxSn(Br1−yIy)6 (A=Rb, K; x≤1, y≤1) can be prepared. The emission of these materials ranges from 500 nm to 620 nm with the possibility to compositionally tune the Stokes shift and the self‐trapped exciton emission bands.
- Subjects
INORGANIC chemistry; HALIDES; RECOMBINATION (Chemistry); CHEMICAL yield; SEMICONDUCTORS; LUMINESCENCE
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 35, p11499
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201806452