Optical properties and Raman studies of amorphous Se-Bi thin films

Austine A. Mulama, Julius M. Mwabora, Andrew O. Oduor, Cosmas C. Muiva

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Flash evaporated amorphous Se100-xBix(x = 0, 1, 2, 3, and 4 at.%) thin films of 350 ± 10nm thickness have been investigated in the wavelength range of 200nm - 3000nm. It is found that the effect of increasing bismuth content on the as deposited films led to increased absorption coefficient, reflectance, refractive index and extinction coefficient while transmittance and optical band gap energy decreased. The Raman spectra showed peaks at 238.8cm-1, 248.3cm-1, 249.5cm-1, 250.7cm-1, 251.9cm-1, 488.1cm-1, and 489.3cm-1 due to selenium rings and chains at various bismuth concentrations.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalAfrican Review of Physics
Volume9
Publication statusPublished - Jan 1 2014

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bismuth
optical properties
thin films
selenium
flash
transmittance
absorptivity
extinction
refractivity
Raman spectra
reflectance
rings
coefficients
wavelengths

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Mulama, Austine A. ; Mwabora, Julius M. ; Oduor, Andrew O. ; Muiva, Cosmas C. / Optical properties and Raman studies of amorphous Se-Bi thin films. In: African Review of Physics. 2014 ; Vol. 9. pp. 33-38.
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Optical properties and Raman studies of amorphous Se-Bi thin films. / Mulama, Austine A.; Mwabora, Julius M.; Oduor, Andrew O.; Muiva, Cosmas C.

In: African Review of Physics, Vol. 9, 01.01.2014, p. 33-38.

Research output: Contribution to journalArticle

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