Publication
Applied Physics Letters
Paper

Low spin density amorphous hydrogenated germanium prepared by homogeneous chemical vapor deposition

View publication

Abstract

Structural [nuclear magnetic and electron spin resonance (ESR), infrared spectroscopy], optical (absorption, photoacoustic, photoluminescence), and electrical data are presented for amorphous hydrogenated germanium (a-Ge:H) prepared by homogeneous chemical vapor deposition (HOMOCVD). Like HOMOCVD prepared amorphous hydrogenated silicon, these a-Ge:H materials exhibit very low ESR spin densities and systematically varying optical gaps and hydrogen contents. Nevertheless, the material displays no subband gap photoluminescence and minimal photoconductivity, suggesting that a spinless defect may ultimately limit the device application of all types of a-Ge:H and a-(Ge,Si):H films.

Date

01 Jan 1985

Publication

Applied Physics Letters

Authors

Share