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- W2000628873 abstract "Excitation spectra for the free (FE) and bound (BE) exciton luminescence in PbI<SUB>2</SUB> have been investigated in the exciton absorption region. The excitation spectrum for FE consists of a series of sharp maxima. The structure is shown to arise from phonon scattering processes of exciton polaritons. There is a difference in the spectral profile between the excitation spectrum for FE and that for the phonon sideband of FE. The difference is explained by the change in the spatial distribution of polaritons with the incident photon energy. It is found that the excitation spectrum for BE has a spectral feature quite different from the cases of other materials such as CdS. This is due to the trapping process peculiar to PbI<SUB>2</SUB>, in which bottleneck polaritons are captured with emission of an optical phonon. The difference in the trapping process between PbI<SUB>2</SUB> and CdS is discussed." @default.
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- W2000628873 date "1995-02-09" @default.
- W2000628873 modified "2023-09-23" @default.
- W2000628873 title "<title>Relaxation processes of exciton polaritons manifested in luminescent excitation spectra in PbI2</title>" @default.
- W2000628873 doi "https://doi.org/10.1117/12.200945" @default.
- W2000628873 hasPublicationYear "1995" @default.
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