Low Temperature Physics: 42, 594 (2016); https://doi.org/10.1063/1.4959019
Физика Низких Температур: Том 42, Выпуск 7 (Июль 2016), c. 756-759    ( к оглавлению , назад )

Long-term evolution of luminescent properties in CdI2 crystals

I. Karbovnyk, I. Bolesta, I. Rovetskyi, V. Lesivtsiv, Ya. Shmygelsky, and S. Velgosh

Department of Electronics, Ivan Franko National University of Lviv 107 Tarnavskogo Str., Lviv 79017, Ukraine
E-mail: ivan_karbovnyck@yahoo.com

A.I. Popov

Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., Riga LV-1063, Latvia

Received April 6, 2016


Fresh and aged melt-grown or gas-phase grown CdI2 crystals are studied by means of low-temperature photo-luminescence spectroscopy. Noticeable transformations of emission spectra are observed after long-term aging. The formation of nanostructures containing cadmium oxide and cadmium hydroxide as well as the changes in local surrounding of iodine atoms and the possible growth of polytypic modifications of CdI2 are taken into account when considering the diversity of optical spectra.

PACS: 78.55.–m Photoluminescence, properties and materials;
PACS: 78.67.–n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures.

Key words: СdI2, luminescence, nanostructures, spectroscopy.

Published online: May 25, 2016