Spectral distribution of steady-state photoconductivity in amorphous As<sub>2</sub>Se<sub>3</sub>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Spectral distribution of steady-state photoconductivity in amorphous As₂Se₃

Authors:	G.J. Adriaenssens M. Hammam H. Michiel J.M. Marshall

Affiliation:	Laboratorium voor Vaste Stof en Hoge Druk-fysika, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3030 Heverlee-Leuven, Belgium

Abstract:	The spectral distribution of steady-state photoconductivity has been examined for a series of bulk and evaporated samples of amorphous As₂Se₃. All bulk samples, irrespective of preparation technique or sample treatment, show a distinct shoulder in the photocurrent spectral distribution at energies near 1.4 eV. This feature is interpreted as spectroscopic evidence for the existence of a well-defined defect level in the gap of amorphous As₂Se₃. Evaporated As₂Se₃ films do not show any structure in the spectral response.

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