期刊
ADVANCED MATERIALS
卷 30, 期 36, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201707621
关键词
host-guest systems; hybrid perovskites; organic molecules; phosphorescence; two-dimensional
类别
资金
- Institute for Sports Research, Nanyang Technological University
- Bundesministerium fur Bildung und Forschung (BMBF Hyper project) [03SF0514C]
- Singapore Ministry of Education AcRF Tier 2 [MOE2015-T2-2-065]
Solution-processed organic-inorganic hybrid perovskites are promising emitters for next-generation optoelectronic devices. Multiple-colored, bright light emission is achieved by tuning their composition and structures. However, there is very little research on exploring optically active organic cations for hybrid perovskites. Here, unique room-temperature phosphorescence from hybrid perovskites is reported by employing novel organic cations. Efficient room-temperature phosphorescence is activated by designing a mixed-cation perovskite system to suppress nonradiative recombination. Multiple-colored phosphorescence is achieved by molecular design. Moreover, the emission lifetime can be tuned by varying the perovskite composition to achieve persistent luminescence. Efficient room-temperature phosphorescence is demonstrated in hybrid perovskites that originates from the triplet states of the organic cations, opening a new dimension to the further development of perovskite emitters with novel functional organic cations for versatile display applications.
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