Energy band structure and Frenkel excitons in PbGa2S4

STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; PARVAN, V. I.; ZALAMAI, V. V.

dc.contributor.author	STAMOV, I. G.
dc.contributor.author	SYRBU, N. N.
dc.contributor.author	URSAKI, V. V.
dc.contributor.author	PARVAN, V. I.
dc.contributor.author	ZALAMAI, V. V.
dc.date.accessioned	2020-11-16T15:51:27Z
dc.date.available	2020-11-16T15:51:27Z
dc.date.issued	2012
dc.identifier.citation	STAMOV, I. G., SYRBU, N. N., URSAKI, V. V. et al. Energy band structure and Frenkel excitons in PbGa2S4. In: Optics Communications, 2012, V. 285, Nr. 24, pp. 5198-5204. ISSN 0030-4018.	en_US
dc.identifier.uri	https://doi.org/10.1016/j.optcom.2012.07.041
dc.identifier.uri	http://repository.utm.md/handle/5014/11507
dc.description	Access full text - https://doi.org/10.1016/j.optcom.2012.07.041	en_US
dc.description.abstract	Optical reflection spectra are measured and calculated in PbGa2S4 crystals in the region of resonances related to excitons with large oscillator strength and binding energy (Frenkel excitons). The splitting of the upper valence band in the center of the Brillouin zone due to crystal field (Δcf) and spin orbit (Δso) interaction are determined. Optical reflection spectra Optical reflection spectra are measured and calculated in PbGa2S4 crystals in the region of resonances related to excitons with large oscillator strength and binding energy (Frenkel excitons). The splitting of the upper valence band in the center of the Brillouin zone due to crystal field (Δcf) and spin orbit (Δso) interaction are determined. Optical reflection spectra are measured and calculated according to Kramers–Kronig relations in the region of 3–6eV in Ес and Ес polarizations, and the optical constants n, k, ε1 and ε2 are determined. The observed electronic transitions in PbGa2S4 crystals are discussed in the frame of theoretical energy band structure calculation for thiogallate crystals.	en_US
dc.language.iso	en	en_US
dc.publisher	ELSEVIER	en_US
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 United States	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	semiconductor compounds	en_US
dc.subject	optical absorption	en_US
dc.subject	reflection spectra	en_US
dc.subject	luminescence spectras	en_US
dc.subject	excitons	en_US
dc.subject	bands	en_US
dc.subject	crystals	en_US
dc.title	Energy band structure and Frenkel excitons in PbGa2S4	en_US
dc.type	Article	en_US