Influence of electron beam irradiation on structural and optical properties of thermally evaporated GeTe thin films

Deepangkar Sarkar, Ganesh Sanjeev, M. G. Mahesha

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effects of electron beam irradiation on optical and morphological properties of germanium telluride (GeTe) thin films, prepared by thermal evaporation technique, were investigated. The surface morphology, optical band gap, refractive index and extinction coefficient of these films were analyzed before and after exposure to electron beam irradiation. Optical analysis by absorption spectroscopy showed that irradiation modifies the optical band gap. Morphological studies through atomic force microscopy (AFM) analysis showed an apparently uniform growth of as deposited GeTe grains. Irradiation at lower dose resulted in increase in surface roughness and at higher dose it decreased again.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalRadiation Physics and Chemistry
Volume98
DOIs
Publication statusPublished - 05-2014

Fingerprint

tellurides
germanium
electron beams
optical properties
irradiation
thin films
dosage
absorption spectroscopy
surface roughness
extinction
evaporation
atomic force microscopy
refractivity
coefficients

All Science Journal Classification (ASJC) codes

  • Radiation

Cite this

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abstract = "The effects of electron beam irradiation on optical and morphological properties of germanium telluride (GeTe) thin films, prepared by thermal evaporation technique, were investigated. The surface morphology, optical band gap, refractive index and extinction coefficient of these films were analyzed before and after exposure to electron beam irradiation. Optical analysis by absorption spectroscopy showed that irradiation modifies the optical band gap. Morphological studies through atomic force microscopy (AFM) analysis showed an apparently uniform growth of as deposited GeTe grains. Irradiation at lower dose resulted in increase in surface roughness and at higher dose it decreased again.",
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Influence of electron beam irradiation on structural and optical properties of thermally evaporated GeTe thin films. / Sarkar, Deepangkar; Sanjeev, Ganesh; Mahesha, M. G.

In: Radiation Physics and Chemistry, Vol. 98, 05.2014, p. 64-68.

Research output: Contribution to journalArticle

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AB - The effects of electron beam irradiation on optical and morphological properties of germanium telluride (GeTe) thin films, prepared by thermal evaporation technique, were investigated. The surface morphology, optical band gap, refractive index and extinction coefficient of these films were analyzed before and after exposure to electron beam irradiation. Optical analysis by absorption spectroscopy showed that irradiation modifies the optical band gap. Morphological studies through atomic force microscopy (AFM) analysis showed an apparently uniform growth of as deposited GeTe grains. Irradiation at lower dose resulted in increase in surface roughness and at higher dose it decreased again.

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