Tensoresistive properties of single crystals TlIn1−xGaxSe<sub>2</sub>

Gojayev, E. M.; Mammadova, Gulshan Nuraddin

doi:10.1142/s0217979221502015

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Among the compounds of the above type, TlInSe2 occupies a special place. This compound has high tensoresistive properties [4], high photosensitivity [5], switching properties with memory [6][7][8][9], etc. The electrical and photoelectric properties of TlInSe2 single crystals were studied in [10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Tlinse2<Au> Single Crystals

G.N. Mammadova

2024

jes

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This paper presents the results of studying the surface microrelief in 2D and 3D models and analyzing the spectroscopy of a three-junction TlInSe2<Au> crystal. Analysis of the results obtained showed that with a change in the composition of the TlInSe2<Au> crystal, sharp changes occur in the microrelief of its surface. An X-ray optical diffraction analysis of the TlInSe2<Au> crystal was experimentally carried out. Based on ellipsometric data, optical functions were determined - the real and imaginary parts of the dielectric permittivity of crystals, the coefficients of optical absorption and reflection, the dependence of energy losses and electric field power on the effective density, the spectral dependences of the real (σr) and imaginary (σi) parts, optical electrical conductivity were experimentally studied. The fluorescence spectra of the ternary compound TlInSe2<Au> were isolated and analyzed when excited by light with a wavelength of 532 nm. X-ray studies of TlInSe2<Au> showed that this phase crystallizes into tetragonal systems. Ellipsometric measurements showed that the real (ε1) and imaginary (ε2) parts of the dielectric constant are components of the dielectric constant tensor of the uniaxial joints under consideration and do not depend on the angle. Analysis of the dependence of the real and imaginary parts of the refractive index of the TlInSe2<Au> crystal on photon energy showed that the nature of the change in the real and imaginary parts of the dielectric constant does not differ significantly. When analyzing the spectral dependences of the real (σr) and imaginary (σi) parts of the optical electrical conductivity, it was noticed that the real part of the optical electrical conductivity increases exponentially in the energy range 0.894-3.505 eV. In the energy range of 0.654-2.91 eV, the imaginary part of the optical electrical conductivity increases linearly, reaches a maximum value, and decreases at an energy of 2.91 eV. At 3.6 eV, an inversion of the imaginary part of the optical electrical conductivity of the TlInSe2<Au> compound is observed. From the graphs of the effective power density versus electric field energy losses, it is known that the effective power density increases significantly in the energy range of 0.805–3.52 eV. The fluorescence spectrum of the ternary compound TlInSe2<Au> upon excitation with light with a wavelength of 532 nm has been studied and it has been established that this phase has luminescent properties.

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Section: Introductionmentioning

confidence: 99%

Optical Properties of Tlinse2<Au> Single Crystals

G.N. Mammadova

2024

jes

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Piezomodulation of electrical conductivity in TlIn0.9Ga0.1Se₂ single crystals

Gojaev

Mammadov

Mammadova

et al. 2022

Int. J. Mod. Phys. B

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In the present work, the piezoelectric properties of TlIn[Formula: see text]Ga[Formula: see text]Se2 single crystals are investigated. Single crystals were grown by the Bridgman–Stockbarger method. The results show that when periodic mechanical vibrations are excited in these crystals, the electrical conductivity is modulated at the same frequency. Measurements of the amplitude values of the piezoconductivity at the same degree of deformation in the dark and under different illumination revealed the presence of a linear relationship between them. The level of the piezosignal also changes linearly depending on the strength of the magnetic field. Thus, TlIn[Formula: see text]Ga[Formula: see text]Se2 crystals have a potential prospect of application in the field of highly sensitive magnetic and light sensors.

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Tensoresistive properties of single crystals TlIn1−xGaxSe₂

Cited by 2 publications

References 31 publications

Optical Properties of Tlinse2<Au> Single Crystals

Optical Properties of Tlinse2<Au> Single Crystals

Piezomodulation of electrical conductivity in TlIn0.9Ga0.1Se₂ single crystals

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Tensoresistive properties of single crystals TlIn1−xGaxSe2

Cited by 2 publications

References 31 publications

Optical Properties of Tlinse2<Au> Single Crystals

Optical Properties of Tlinse2<Au> Single Crystals

Piezomodulation of electrical conductivity in TlIn0.9Ga0.1Se2 single crystals

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Tensoresistive properties of single crystals TlIn1−xGaxSe₂

Piezomodulation of electrical conductivity in TlIn0.9Ga0.1Se₂ single crystals