Published July 21, 2015 | Version v1
Journal article Metadata-only

Band gap and refractive index tunability in thallium based layered mixed crystals

Creators

  • 1. Virtual International Scientific Research Centre, Baku State University, Baku 1148 (Azerbaijan)
  • 2. Department of Physics, Middle East Technical University, Ankara 06800 (Turkey)

Description

Compositional variation of the band gap energy and refractive index of TlMeX2-type (Me = Ga or In and X = S or Se) layered mixed crystals have been studied by the transmission and reflection measurements in the wavelength range of 400–1100 nm. The analysis of absorption data of TlGa1-xInxSe2, TlGa(S1−xSex)2, TlGa1−xInxS2, and TlIn(Se1−xSx)2 mixed crystals revealed the presence of both optical indirect and direct transitions. It was found that the energy band gaps of mixed crystals decrease at the replacing of gallium atoms by indium and of sulfur atoms by selenium ones. Through the similar replacing of atoms (smaller atoms by larger ones) in the studied mixed crystals, the refractive index shows the quite opposite behavior

Additional details

Identifiers

DOI
10.1063/1.4926864;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
118
Journal Issue
3
Journal Page Range
p. 035701-035701.4
ISSN
0021-8979
CODEN
JAPIAU

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47060874
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ABSORPTION; ATOMS; CRYSTALS; GALLIUM; INDIUM; REFLECTION; REFRACTIVE INDEX; SELENIUM; SULFUR; THALLIUM; TRANSMISSION; VARIATIONS; WAVELENGTHS
Descriptors DEC
ELEMENTS; METALS; NONMETALS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; SEMIMETALS; SORPTION

Optional Information

Notes
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