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LOW-TEMPERATURE PHOTOLUMINESCENCE SPECTRA OF TLINXGA1-XS2 LAYER MIXED-CRYSTALS
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Date
1995-06-01
Author
ALLAKHVERDIEV, KR
Hasanlı, Nızamı
AYDINLI, A
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Low-temperature photoluminescence spectra of TlInS2, TlIn0.95 Ga0.05S2 and TlIn0.8Ga0.2S2 layer crystals were studied in the temperature range 14-220 K. The temperature dependencies of bands 2.374eV (A), 2.570 eV (E) and 2.576 eV (F) for TlInS2 are interpreted by supposing that the crystal undergoes structural phase transitions. Band A is considered to come from a donor-acceptor recombination channel.
Subject Keywords
Semiconductors
,
Ferroelectrics
,
Optical properties
,
Phase transitions
,
Luminescence
URI
https://hdl.handle.net/11511/33156
Journal
SOLID STATE COMMUNICATIONS
DOI
https://doi.org/10.1016/0038-1098(95)00037-2
Collections
Department of Physics, Article
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Hasanlı, Nızamı (2012-11-01)
The absorption edge of undoped Tl2Ga2S3Se crystals have been studied through transmission and reflection measurements in the wavelength range 440-1100 nm and in the temperature range 10-300 K. The absorption edge was observed to shift toward lower energy values with increasing temperature. As a result, the rate of the indirect band gap variation with temperature gamma = -2.6 x 10(-4) eV/K and the absolute zero value of the band gap energy E-gi(0)=2.42 eV were obtained.
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K. ALLAKHVERDIEV, N. Hasanlı, and A. AYDINLI, “LOW-TEMPERATURE PHOTOLUMINESCENCE SPECTRA OF TLINXGA1-XS2 LAYER MIXED-CRYSTALS,”
SOLID STATE COMMUNICATIONS
, pp. 777–782, 1995, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33156.