Effect of thallium (Tl) substitution for indium (In) on ellipsometric characteristics of TlInSe2 single crystals

Date

2021-11-01

Author

Isik, M.
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

269
views

0
downloads

TlMeSe2 (Me: Tl, In) semiconducting compounds exhibiting chain structure have been attractive ternary materials in various technological devices. In the TlMeSe2 structure, Tl1+ is monovalent while Me3+ is trivalent ions. The present paper reports the results of spectroscopic ellipsometry measurements performed on Tl1+(Tl0.2In0.8)3+Se2 (abbreviated as Tl1.2In0.8Se2) single crystals which were grown by substituting thallium for indium. The measurements were performed for orientations of E//c and E丄c (E: electric field and c: optical axis). The analyses of ellipsometry data considering air-sample optical model presented the spectral dependencies of dielectric function, refractive index and extinction coefficient in the 1.2–5.0 eV range. Critical point energies of studied single crystal were obtained by fitting second-energy derivative spectra of dielectric function. The determined energies were compared with those of TlInSe2 to understand the effect of thallium-indium substitution in the compound. The crystal structure and atomic compositions of the constituent elements were also reported throughout the paper.

Subject Keywords

TlInSe2 , Ellipsometry , Critical points , Optical properties

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85107622801&origin=inward
https://hdl.handle.net/11511/91080

Journal

Materials Science in Semiconductor Processing

DOI

https://doi.org/10.1016/j.mssp.2021.106005

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Effect of ternary alloying elements addition on atomic ordering characteristics of Fe-Al intermetallics Mehrabov, Amdulla; Akdeniz, Mahmut Vedat (Elsevier BV, 1999-05-28) The energetic and structural characteristics of atomic ordering processes in Fe-0.5(Al1-nXn)(0.5) intermetallics have been qualitatively analyzed based on the statistico-thermodynamical theory of ordering by means of a quasi-chemical method combined with electronic theory in the pseudopotential approximation. The effects of ternary impurities on order-disorder phase transformation temperature and the characteristics of atomic short-range order in Fe-Al type intermetallics have been calculated. Impurity elem...
Effect of amorphous SiC layer on electrical and optical properties of Al/a-SiC/c-Si Schottky diode for optoelectronic applications Barbouche, M.; Benabderrahmane Zaghouani, R.; Ben Ammar, N.E.; Aglieri, V.; Nasser, H.; Turan, Raşit; Ezzaouia, H. (2021-01-01) In this work, we report on the study of the electrical and optical properties of amorphous silicon carbide (a-SiC)-based Schottky diodes for optoelectronic applications. A significant decrease of reflectivity and an enhancement of the passivating properties of more than 97% were reached after a-SiC layer deposition on silicon substrate. The deposited a-SiC film exhibits a dielectric constant of 2.143. Temperature effect on Schottky diode performances was carried out through the analysis of the current–volta...
Effect of boron containing materials on flammability and thermal degradation of polyamide-6 composites containing melamine cyanurate Yılmaz, Ayşen; Bayramli, Erdal (2011-05-01) Three different boron containing materials, zinc borate (ZnB), borophosphate (BPO(4)), and boron and silicon containing oligomer (BSi), were used to improve the flame retardancy of melamine cyanurate (MC) in a polyamide-6 (PA-6) matrix. The combustion and thermal degradation characteristics were investigated using limiting oxygen index (LOI), UL-94 standard, thermogravimetric analysis-Fourier transform infrared spectroscopy (TGA-FTIR), differential scanning calorimeter (DSC), and scanning electron microscop...
Effect of YF3 on hot-pressed hydroxyapatite and monoclinic zirconia composites Evis, Zafer (2007-09-15) Monoclinic zirconia and hydroxyapatite (HA) composites with or without 5 wt% YF3 were synthesized to investigate their mechanical properties and phase stability. HA decomposed to tri-calcium-phosphate and CaZrO3 in the 25 wt% ZrO2-75 wt% HA composite. However, thermal stability of the phases, densification, hardness and fracture toughness were improved when 5 wt% YF3 was added into the system. Five weight percent YF3 increased the transformation of monoclinic-ZrO2 into tetragonal/cubic-ZrO2 by incorporating...
Effect of Conjugated Core Building Block Dibenzo[a,c]phenazine Unit on pi-Conjugated Electrochromic Polymers: Red-Shifted Absorption Unver, Elif Kose; Tarkuc, Simge; Udum, Yasemin Arslan; Tanyeli, Cihangir; Toppare, Levent Kamil (2010-04-15) A comparative investigation was undertaken for the electrosynthesis and electrochemical properties of three different electroactive polymers having a conjugated core building block, dibenzo[a,c]phenazine. A series of monomers has been synthesized as regards to thiophene based units; thiophene, 3-hexyl thiophene, and 3,4-ethylenedioxythiophene. The effects of different donor substituents on the polymers' electrochemical properties were examined by cyclic voltammetry. Introducing highly electron-donating (eth...

Citation Formats

M. Isik and N. Hasanlı, “Effect of thallium (Tl) substitution for indium (In) on ellipsometric characteristics of TlInSe2 single crystals,” Materials Science in Semiconductor Processing, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85107622801&origin=inward.