Investigation of effect of annealing on thermally evaporated ZnSe thin films through spectroscopic techniques

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

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

ZnSe thin films have been grown on clean glass substrates by thermal evaporation technique and deposited films have been annealed at 473 K. William-Hall method has been adopted to extract information on crystallite size and internal strain in the film from X-ray diffractogram. Effect of annealing on ZnSe films has been analyzed by spectroscopic techniques which include optical absorption, Raman, and photoluminescence spectroscopy. From optical absorption, band gap has been estimated along with other optical parameters like refractive index and extinction coefficient. Also, Urbach tail, which originates near bad edge due to structural disorders, has been characterized. Raman spectra have been analyzed to get the information on the influence of crystallite size and strain effect on peak position, intensity and width. Photoluminescence spectra have been recorded and analyzed to get an insight on defect levels induced due to vacancies, interstadials, and impurity complexes.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalPhysica B: Condensed Matter
Volume520
DOIs
Publication statusPublished - 01-09-2017

Fingerprint

Annealing
Crystallite size
Thin films
Light absorption
annealing
optical absorption
thin films
photoluminescence
Photoluminescence spectroscopy
Thermal evaporation
Absorption spectroscopy
Vacancies
Raman spectroscopy
Raman scattering
Absorption spectra
Refractive index
Photoluminescence
absorption spectroscopy
extinction
Energy gap

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Investigation of effect of annealing on thermally evaporated ZnSe thin films through spectroscopic techniques. / Mahesha, M. G.; Rashmitha; Meghana, N.; Padiyar, Meghavarsha.

In: Physica B: Condensed Matter, Vol. 520, 01.09.2017, p. 37-42.

Research output: Contribution to journalArticle

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