期刊
NANO LETTERS
卷 16, 期 10, 页码 6425-6430出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b02874
关键词
Perovskite; nanocrystal; blinking; spectral diffusion; Auger recombination
类别
资金
- National Basic Research Program of China [2012CB921801]
- National Natural Science Foundation of China [11574147, 91321105, 11274161, 11321063]
- Jiangsu Provincial Funds for Distinguished Young Scientists [BK20130012]
- PAPD of Jiangsu Higher Education Institutions
Over the last two decades, intensive research efforts have been devoted to the suppressions of photoluminescence (PL) blinking and Auger recombination in metal-chalcogenide nanocrystals (NCs), with significant progresses being made only very recently in few specific NC structures. Here we show that nonblinking PL is readily available in the newly synthesized perovskite CsPbI3 NCs and that their Auger recombination of charged excitons is greatly slowed down, as signified by a PL lifetime about twice shorter than that of neutral excitons. Moreover, spectral diffusion is completely absent in single CsPbI3 NCs at the cryogenic temperature, leading to a resolution-limited PL line width of similar to 200 mu eV
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