Electronic Absorption Spectrum of Thin K2ZnI4 Films

Публікація:
Electronic Absorption Spectrum of Thin K2ZnI4 Films

dc.contributor.author	Yunakova, O. N.
dc.contributor.author	Miloslavsky, V. K.
dc.contributor.author	Kovalenko, E. N.
dc.date.accessioned	2016-09-20T07:03:02Z
dc.date.available	2016-09-20T07:03:02Z
dc.date.issued	2008
dc.description.abstract	The absorption spectrum of thin K2ZnI4 films has been investigated in the range of 3–6 eV at temperatures from 90 to 340 K. It is established that this compound belongs to direct-gap insulators; low-frequency exciton excitations are localized in the ZnI4 lattice layers and have a quasi-two-dimensional character. The spectral analysis revealed the existence of two K2ZnI4 modifications, which presumably belong to the monoclinic (I) and orthorhombic (II) phases. The temperature dependences of the spectral position and halfwidth of the low-frequency exciton band in K2ZnI4 revealed the existence of first-order phase transitions at 215 and 225 K in the monoclinic and orthorhombic phases, respectively.	uk_UA
dc.identifier.citation	Yunakova, O. N. Electronic Absorption Spectrum of Thin K2ZnI4 Films / O. N. Yunakova, V. K. Miloslavsky, E. N. Kovalenko// Optics and Spectroscopy, 2008, Vol. 105, No. 6, pp. 903–907.	uk_UA
dc.identifier.uri	http://openarchive.nure.ua/handle/document/2902
dc.language.iso	en	uk_UA
dc.subject	electronic absorption spectrum	uk_UA
dc.subject	spectral analysis	uk_UA
dc.title	Electronic Absorption Spectrum of Thin K2ZnI4 Films	uk_UA
dc.type	Article	uk_UA
dspace.entity.type	Publication