Analysis of PV deposited ZnTe thin films through Urbach tail and photoluminescence spectroscopy

Rashmitha Keshav; Meghavarsha Padiyar; N. Meghana; M. G. Mahesha

doi:10.1016/j.jlumin.2017.10.047

Analysis of PV deposited ZnTe thin films through Urbach tail and photoluminescence spectroscopy

Rashmitha Keshav, Meghavarsha Padiyar, N. Meghana, M. G. Mahesha

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

ZnTe thin films have been grown by thermal evaporation on glass substrates at room temperature at a residual pressure about 10⁻⁶ Torr and characterized for their structural and optical properties. Crystallite size and strain have been estimated from X-ray diffractogram by William – Hall method. Urbach tail, which originates near band edge due to structural disorder, has been evaluated along with optical bad gap from the absorbance spectra. Photoluminescence spectra has been recorded to get information on various excited levels. Correlation between optical absorbance and photoluminescence spectra has been established with Roosbroeck–Shockley relation. Finally effect of annealing on structural and optical properties along with photoluminescence spectra has been studied in detail.

Original language	English
Pages (from-to)	257-263
Number of pages	7
Journal	Journal of Luminescence
Volume	194
DOIs	https://doi.org/10.1016/j.jlumin.2017.10.047
Publication status	Published - 01-02-2018

All Science Journal Classification (ASJC) codes

Biophysics
Atomic and Molecular Physics, and Optics
Chemistry(all)
Biochemistry
Condensed Matter Physics

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10.1016/j.jlumin.2017.10.047

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title = "Analysis of PV deposited ZnTe thin films through Urbach tail and photoluminescence spectroscopy",

abstract = "ZnTe thin films have been grown by thermal evaporation on glass substrates at room temperature at a residual pressure about 10−6 Torr and characterized for their structural and optical properties. Crystallite size and strain have been estimated from X-ray diffractogram by William – Hall method. Urbach tail, which originates near band edge due to structural disorder, has been evaluated along with optical bad gap from the absorbance spectra. Photoluminescence spectra has been recorded to get information on various excited levels. Correlation between optical absorbance and photoluminescence spectra has been established with Roosbroeck–Shockley relation. Finally effect of annealing on structural and optical properties along with photoluminescence spectra has been studied in detail.",

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AU - Keshav, Rashmitha

AU - Padiyar, Meghavarsha

AU - Meghana, N.

AU - Mahesha, M. G.

PY - 2018/2/1

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N2 - ZnTe thin films have been grown by thermal evaporation on glass substrates at room temperature at a residual pressure about 10−6 Torr and characterized for their structural and optical properties. Crystallite size and strain have been estimated from X-ray diffractogram by William – Hall method. Urbach tail, which originates near band edge due to structural disorder, has been evaluated along with optical bad gap from the absorbance spectra. Photoluminescence spectra has been recorded to get information on various excited levels. Correlation between optical absorbance and photoluminescence spectra has been established with Roosbroeck–Shockley relation. Finally effect of annealing on structural and optical properties along with photoluminescence spectra has been studied in detail.

AB - ZnTe thin films have been grown by thermal evaporation on glass substrates at room temperature at a residual pressure about 10−6 Torr and characterized for their structural and optical properties. Crystallite size and strain have been estimated from X-ray diffractogram by William – Hall method. Urbach tail, which originates near band edge due to structural disorder, has been evaluated along with optical bad gap from the absorbance spectra. Photoluminescence spectra has been recorded to get information on various excited levels. Correlation between optical absorbance and photoluminescence spectra has been established with Roosbroeck–Shockley relation. Finally effect of annealing on structural and optical properties along with photoluminescence spectra has been studied in detail.

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JO - Journal of Luminescence

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Analysis of PV deposited ZnTe thin films through Urbach tail and photoluminescence spectroscopy

Abstract

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