Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Optical and photoelectrical properties of TlInSSe layered single crystals
Date
2018-01-01
Author
Güler, Işıkhan
Hasanlı, Nızamı
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
299
views
0
downloads
Cite This
Optical and electrical properties of TlInSSe layered single crystals have been studied by means of transmission, reflection and photoconductivity measurements. Transmission and reflection experiments have been carried out from 540 to 1000 nm at room temperature. Derivative analysis was applied to both transmission and reflection spectra and indirect band gap energy was found as 2.06 eV. Photoconductivity measurements have been performed in the temperature range from 245 to 300 K and in the voltage range from 10 to 80 V. From the temperature-dependent photoconductivity measurements, the observed single peak shifted to higher wavelengths with increase of temperature. The increase of photoconductivity with temperature is due to the increase in the mobility of photocarriers that can be explained by Bube model. From X112 method, room temperature indirect band gap of the crystal was also found as 2.06 eV. From voltage-dependent photoconductivity measurements, the peak maximum increased linearly with increase of voltage because of increase of the mobility of charge carriers. Dark current-voltage characteristic of TlInSSe crystal showed the ohmic behavior that means space charge limited current did not exist in the crystal. From the photocurrent with different illumination intensity analysis, the supralinear photoconductivity associated with the two center model was found. (C) 2017 Elsevier GmbH. All rights reserved.
Subject Keywords
Photoresponce
,
Optical Properties
,
Layered Single Crystals
URI
https://hdl.handle.net/11511/30879
Journal
OPTIK
DOI
https://doi.org/10.1016/j.ijleo.2017.11.120
Collections
Graduate School of Natural and Applied Sciences, Article
Suggestions
OpenMETU
Core
Optical properties of GaS crystals: Combined study of temperature-dependent band gap energy and oscillator parameters
IŞIK, MEHMET; TUĞAY, EVRİN; Hasanlı, Nızamı (2017-08-01)
Optical parameters of gallium sulfide (GaS) layered single crystals have been found through temperature-dependent transmission and room temperature reflection experiments in the wavelength range of 400-1100 nm. Experimental data demonstrates the coexistence of both optical indirect and direct transitions and the shift of the absorption edges toward lower energies by increasing temperature in the range of 10-300 K. Band gap at zero temperature, average phonon energy and electron phonon coupling parameter for...
Optical properties of TlGaSeS layered single crystals
Güler, Işıkhan; Hasanlı, Nızamı (2007-12-01)
The optical properties of TlGaSeS layered single crystals have been investigated by measuring the transmissions and the reflections in the wavelength region between 400 and 1100 nm. The optical indirect transitions with a band gap energy of 2.27 eV and direct transitions with a band gap energy of 2.58 eV were found by means of the analysis of the absorption data at the room temperature. The rate of change of the indirect band gap with temperature, that is, gamma = -3.2 x 10(-4) eV/K, was determined from the...
Specific features of the optical spectra in Tl2In2S3Se layered single crystals
Hasanlı, Nızamı; Güler, Işıkhan (2007-06-01)
The optical properties of Tl2In2S3Se layered single crystals have been studied by means of transmission and reflection measurements in the wavelength range of 450-1100 nm. The analysis of the absorption data revealed the presence of both optical indirect and direct transitions with energy band gaps of 2.16 and 2.42 eV, respectively. The observed coexistence of indirect and direct energy band gaps is related to the anisotropy of the TI-containing layered crystals. The dispersion of the refractive index is di...
Optical and electrical characterization of Ga0.75In0.25Se layered single crystals
Işık, Mehmet; Hasanlı, Nızamı; Department of Physics (2013)
In the present thesis, optical and electrical properties of Ga0.75In0.25Se layered single crystals have been studied. The optical properties of the crystals have been investigated by means of visible and infrared reflectivity and transmittance, ellipsometry, Raman spectroscopy, photoluminescence (PL) and thermoluminescence (TL) measurements. The analysis of the absorption data at room temperature revealed the existence of indirect transitions in the crystal. Moreover, the rate of change of the band gap ener...
Optical properties of TlGaxIn1-xS2 layered mixed crystals (0 <= x <= 1) I. Composition- and temperature-tuned energy band gap
Hasanlı, Nızamı (2010-05-28)
Optical properties of the TlGaxIn1-xS2 mixed crystals (0 <= x <= 1) have been studied by means of transmission and reflection measurements in the wavelength range of 400-1100 nm. The optical indirect band gap energies were determined through the analysis of the absorption data. It was found that the energy band gaps increase with increasing of gallium atoms content in the TlGaxIn1-xS2 mixed crystals. From the transmission measurements carried out in the temperature range of 10-300K, the rates of change of t...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
I. Güler and N. Hasanlı, “Optical and photoelectrical properties of TlInSSe layered single crystals,”
OPTIK
, pp. 895–899, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30879.