Photocurrent Transient Spectroscopy: Measurement of the Density of Localized States ina-As2Se3

著者: J. Orenstein, M. A. Kastner - Physical Review Letters 1981 被引用: 414

Measurements of transient photoinduced optical absorption in $a$-${\mathrm{As}}_{2}$${\mathrm{Se}}_{3}$ show that carriers thermalize within a distribution of localized states in the band gap. Photocurrent as well as photoinduced optical absorption transients are explained in a unified way with the multiple-trapping mechanism. Under such circumstances, transient photoconductivity provides a spectroscopy of the density of localized states.