Photoluminescence of CsPbCl3 films prepared by quench deposition and subsequent heat treatments
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概要
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Photoluminescence spectra of CsPbCl3 have been measured for various (nano-, micro-, and poly-) crystalline states, using film samples of high quality achieved by quench deposition and subsequent heat treatments. In great contrast to the case for bulk CsPbCl3, all the spectra are characterized by a single, free-exciton emission band, exhibiting no emission related to trap states even for the microcrystalline/nanocrystalline states. The microcrystalline/nanocrystalline states show much stronger free-exciton emission than the polycrystalline state. The enhanced free-exciton emission is suggestive of the occurrence of excitonic superradiance. The absence of trap states is favourable for excitonic superradiance.
- Institute of Physics Publishingの論文
- 2003-03-00
Institute of Physics Publishing | 論文
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