Fizika Nizkikh Temperatur: Volume 46, Number 12 (December 2020), p. 1426-1429 ( to contents , go back )
Low-temperature luminescence of CdI2 under synchrotron radiation
I. Karbovnyk1, V. Pankratov2, S. Velgosh1, I. Bolesta1, R. Lys1, I. Kityk3, H. Klym4, I. Makarenko5, V. Pankratova2, and A. I. Popov2,6
1Ivan Franko National University of Lviv, Lviv 79017, Ukraine
2Institute of Solid State Physics, University of Latvia, Riga LV-1063, Latvia
3Jan Dlugosz University in Czestochowa, Częstochowa 42-201, Poland
4Department of Specialized Computer Systems, Lviv National Polytechnic University, Lviv 79013, Ukraine
5Kryvyi Rih State Pedagogical University, Kryvyi Rih 50086, Ukraine
6Institute of Physics, University of Tartu, Tartu 50411, Estonia
Received July 14, 2020, published online October 21, 2020
Synchrotron radiation is applied to study visible and UV luminescence spectra and their excitation spectra of undoped as well as In and Sb doped cadmium iodide crystals at 10 K. The origin of principal luminescence bands and the role of impurities in the formation of emission centers are discussed. The luminescence properties have been explained based on the electronic structure of CdI2 crystals.
Key words: synchrotron radiation, luminescence, CdI2, emission centers.