This article is cited in 4 papers

Semiconductors

Optical spectra of GaSe and GaS crystals of different thicknesses

V. F. Agekyan, A. Yu. Serov, N. G. Filosofov

Saint Petersburg State University

Abstract: The transmission spectra of GaSe and GaS crystals of different thicknesses prepared by mechanical stratification of bulk crystals have been investigated. The quantum-size shifts of exciton resonances in thin GaSe samples are as high as 12 meV, which is close to the exciton binding energy. The high-energy interband transitions in GaSe and GaS are observed near 3.4 and 3.7 eV, respectively.

Received: 18.12.2017

DOI: 10.21883/FTT.2018.06.46002.348

 English version: Physics of the Solid State, 2018, 60:6, 1223–1225

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