Specific Features of Photoluminescence and Nanosecond Relaxation of Photocurrent in CuIn5S8 Crystals upon Strong Optical Excitation
Optics and Spectroscopy, vol.128, no.12, pp.1978-1982, 2020 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 128 Issue: 12
- Publication Date: 2020
- Doi Number: 10.1134/s0030400x20120905
- Journal Name: Optics and Spectroscopy
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Compendex, INSPEC
- Page Numbers: pp.1978-1982
- Keywords: CuIn5S8, photoconductivity, photocurrent, photoluminescence
- Azerbaijan State University of Economics (UNEC) Affiliated: Yes
Abstract
Abstract: Intense luminescence and nanosecond relaxation of photocurrent upon strong optical excitation have been observed in CuIn5S8 crystals grown by slow melt cooling at a constant temperature gradient. Three emission bands with energies of 1.52, 1.48, and 1.465 eV are distinguished in the photoluminescence spectra. The crystal photoactivation in the range of 300–600 K is explained by an increase in the hole mobility in the valence band with an increase in temperature.