Emission characteristics of CsPbBr3 and Cs4PbBr6 aggregates in CsBr bulk and thin film matrices are reported. The emission of the former aggregated phase is peaking abo ut 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 Cs4PbBr6 aggregates show emission peak at 375 nm and overall emission characteristics are similar to those of KBr:Pb, which is explained by very dose local arrangement of emission centres - (PbBr6)(4-) octahedra - in both structures.

Nikl, M., Nitsch, K., Mihokova, E., Polak, K., Fabeni, P., Pazzi, G.p., et al. (1999). Optical properties of Pb2+-based aggregated phases in CsBr thin film and single crystal matrices. RADIATION EFFECTS AND DEFECTS IN SOLIDS, 150(1-4), 341-345 [10.1080/10420159908226254].

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

SOMMA, Fabrizia
1999

Abstract

Emission characteristics of CsPbBr3 and Cs4PbBr6 aggregates in CsBr bulk and thin film matrices are reported. The emission of the former aggregated phase is peaking abo ut 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 Cs4PbBr6 aggregates show emission peak at 375 nm and overall emission characteristics are similar to those of KBr:Pb, which is explained by very dose local arrangement of emission centres - (PbBr6)(4-) octahedra - in both structures.
Nikl, M., Nitsch, K., Mihokova, E., Polak, K., Fabeni, P., Pazzi, G.p., et al. (1999). Optical properties of Pb2+-based aggregated phases in CsBr thin film and single crystal matrices. RADIATION EFFECTS AND DEFECTS IN SOLIDS, 150(1-4), 341-345 [10.1080/10420159908226254].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/143633
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