Luminescence from size-quantized exciton states of PbI2

Takenari Goto; Shingo Saito

doi:10.1117/12.137587

3 September 1992 Luminescence from size-quantized exciton states of PbI₂

Takenari Goto, Shingo Saito

Author Affiliations +

Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137587
Event: Semiconductors '92, 1992, Somerset, NJ, United States

Abstract

We have measured bound exciton luminescences from PbI₂ microcrystallites in the shape of a platelet embedded into E-MAA copolymer at 4.2 K. An energy shift of the bound exciton from the free exciton increases as the thickness of the crystallite decrease, and amounts to 51 meV in the crystallite with a monolayer, which is about seven times as large as that of the bulk crystal. This fact strongly suggests that the binding energy of the free exciton becomes larger both for the size confinement and dielectric screening effects.

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Takenari Goto and Shingo Saito "Luminescence from size-quantized exciton states of PbI₂", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137587

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