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19 November 1993 Dielectrically confined excitons in natural superlattices: perovskite lead iodide semiconductors
E. Muljarov, Sergei G. Tikhodeev, Terry Ishihara
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Proceedings Volume 1985, Physical Concepts and Materials for Novel Optoelectronic Device Applications II; (1993) https://doi.org/10.1117/12.162738
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications II, 1993, Trieste, Italy
Abstract
A large class of new layered semiconductors -- perovskite lead iodide compounds -- is of great interest because of possible optoelectronic applications due to pronounced excitonic effects. It has been predicted earlier that excitons in these structures should be enhanced due to the so called `dielectric confinement' arising from large differences of dielectric constants of adjoining layers. In the present work we calculate the energies, the wave functions, and the diamagnetic coefficient of excitons in these naturally grown superlattices with allowance for the image potential and the superlattice structure of the compounds. The fitting of our theory to the experiments makes it possible to evaluate the reduced mass of excitons in these compounds.
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E. Muljarov, Sergei G. Tikhodeev, and Terry Ishihara "Dielectrically confined excitons in natural superlattices: perovskite lead iodide semiconductors", Proc. SPIE 1985, Physical Concepts and Materials for Novel Optoelectronic Device Applications II, (19 November 1993); https://doi.org/10.1117/12.162738
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KEYWORDS
Excitons
Superlattices
Lead
Perovskite
Semiconductors
Dielectrics
Optoelectronics
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