biostudies-literatureBenin BMEuropean Research CouncilH2020 Marie Skłodowska-Curie Actions11329-11333https://www.ebi.ac.uk/biostudies/studies/S-EPMC6175341biostudies-literatureUnknown57(35)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 Sn^II material Cs₄ SnBr₆ 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 Cs_4-x A_x Sn(Br_1-y I_y )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.Angewandte Chemie (International ed. in English)Highly Emissive Self-Trapped Excitons in Fully Inorganic Zero-Dimensional Tin Halides.PMC6175341642656306733H2020-MSCA-ITN-642656Worle MRaino GInfante IKovalenko MVMorad VNazarenko ODirin DNFischer MBenin BMYakunin SfalseHighly Emissive Self-Trapped Excitons in Fully Inorganic Zero-Dimensional Tin Halides.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 Sn^II material Cs₄ SnBr₆ 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 Cs_4-x A_x Sn(Br_1-y I_y )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.2018-01-01T00:00:00Z2018 Aug2024-11-13T16:45:21.27Z2019-03-27T00:03:01ZS-EPMC61753412999957510.1002/anie.201806452