SUB-GAP AND BAND EDGE OPTICAL ABSORPTION IN a-Si:H BY PHOTOTHERMAL DEFLECTION SPECTROSCOPY

Open Access

1 October 1981

journal article
Published by EDP Sciences in Le Journal de Physique Colloques

Vol. 42 (C4) , C4-293
https://doi.org/10.1051/jphyscol:1981461

Abstract

Using photothermal deflection spectroscopy, we have investigated the optical absorption of various a-Si:H films in the range of 2.1-0.6 eV. An absorption shoulder which depends on deposition conditions and on doping was found and was attributed to dangling bonds. We also observed that the exponential edge broadens with increasing spin density

Keywords

SUB GAP
OPTICAL
ABSORPTION
EDGE
DEFLECTION
PHOTOTHERMAL
GAP AND BAND