非晶态As50Se50薄膜中光导率的光致各向异性

Photoinduced anisotropy of photoconductivity in amorphous As50Se50 films.

作者信息

Lyubin V, Klebanov M, Tikhomirov V K

机构信息

Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.

出版信息

Phys Rev Lett. 2001 Nov 19;87(21):216806. doi: 10.1103/PhysRevLett.87.216806. Epub 2001 Nov 2.

DOI:10.1103/PhysRevLett.87.216806

PMID:11736366

Abstract

We show that photoinduced optical anisotropy in amorphous As50Se50 films is accompanied by photoinduced anisotropy of photoconductivity while both photoinduced effects are optically reversible. We suggest that microanisotropic fragments which are the feature of amorphous chalcogenide films do affect not only the light absorption but also the transport of nonequilibrium charge carriers.

摘要

我们表明，非晶态As50Se50薄膜中的光致光学各向异性伴随着光致电导率的光致各向异性，而这两种光致效应在光学上都是可逆的。我们认为，作为非晶硫属化物薄膜特征的微各向异性碎片不仅影响光吸收，而且影响非平衡电荷载流子的输运。