Optical properties of Pb2+-based aggregated phases in CsBr Thin film and single crystal matrices

Emission characteristics of CsPbBr 3 and Cs 4 PbBr 6 aggregates in CsBr bulk and thin film matrices are reported. The emission of the former aggregated phase is peaking about 520-560 nm. It shows small Stokes shift (50 meV) related to narrow free exciton emission line of sub-nanosecond decay times....

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Bibliographic Details
Published in:Radiation effects and defects in solids 1999-11, Vol.150 (1-4), p.341-345
Main Authors: Nikl, M., Nitsch, K., Mihokova, E., Polak, K., Fabeni, P., Pazzi, G. P., Gurioli, M., Phani, R., Santucci, S., Scacco, A., Somma, F.
Format: Article
Language:eng ; jpn
Subjects:
CsBr
Decay kinetics
Luminescence
Quantum dots
Thin film
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Summary:Emission characteristics of CsPbBr 3 and Cs 4 PbBr 6 aggregates in CsBr bulk and thin film matrices are reported. The emission of the former aggregated phase is peaking about 520-560 nm. It shows small Stokes shift (50 meV) related to narrow free exciton emission line of sub-nanosecond decay times. Quantum size effect was evidenced for the aggregates of 6-7 nm in diameter. The Cs 4 PbBr 6 aggregates show emission peak at 375 nm and overall emission characteristics are similar to those of KBr: Pb, which is explained by very close local arrangement of emission centres-(PbBr 6 ) 4- octahedra-in both structures.
ISSN:1042-0150
1029-4953
DOI:10.1080/10420159908226254