Optical energy gap of amorphous selenium: effect of annealing

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, , Citation A K Bhatnagar et al 1985 J. Phys. D: Appl. Phys. 18 L149 DOI 10.1088/0022-3727/18/9/001

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1 Sch. of Phys., Hyderabad Univ., India

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0022-3727/18/9/L149

Abstract

The optical energy gap of amorphous Se powder has been determined by a photo-acoustic method and has been found to be 1.99+or-0.02 eV. On annealing, the gap decreases linearly as a function of annealing temperature towards that of the crystalline selenium.

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10.1088/0022-3727/18/9/001