Photoluminescence of tl4hgi6 single crystals

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作者
Kashuba, A.I. [1 ]
Solovyov, M.V. [2 ]
Franiv, A.V. [2 ]
Andriyevsky, B. [3 ]
Malyi, T.S. [2 ]
Tsyumra, V.B. [2 ,4 ]
Zhydachevskyy, Ya.A. [4 ]
Ilchuk, H.A. [1 ]
Fedula, M.V. [5 ]
机构
[1] Lviv Polytechnic National University, Lviv,79646, Ukraine
[2] Ivan Franko National University of Lviv, Lviv,79005, Ukraine
[3] Faculty of Electronics and Computer Sciences, Koszalin University of Technology, Koszalin,75-453, Poland
[4] Institute of Physics, Polish Academy of Sciences, Warsaw,02-668, Poland
[5] Khmelnytskyi National University, Khmelnytskyi,29016, Ukraine
来源
Fizika Nizkikh Temperatur | 2020年 / 46卷 / 10期
关键词
The temperature behavior of Tl4HgI6 photoluminescence spectra is presented. The emission spectra are studied in the temperature range between 4.5 and 300 K and in the spectral range 350-650 nm. Two main emission bands at ~ 551 nm and ~ 448 nm are observed corresponding to the emissions of HgI2 and TlI impurity centers. It is assumed that the low-temperature emission band at ~ 520 nm corresponds to the recombination of the exciton. The luminescence peaks observed in emission spectra in the range between 350 and 410 nm correspond to the phonon repetitions. The excitation spectra of emission bands are measured at 4.5 K and compared with the electron density of states. © A. I. Kashuba; M; V; Solovyov; A; Franiv; B; Andriyevsky; T; S; Malyi; Tsyumra; Ya; Zhydachevskyy; H; Ilchuk; and M. V. Fedula; 2020;
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页码:1227 / 1231
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