PHOTORESPONSE TIME AND DENSITY OF LOCALIZED STATES IN THE MOBILITY GAP OF a-Si:H ALLOYS PREPARED BY R.F. GLOW DISCHARGE L. Guimarães, R. Martins et A.G. Dias J. Phys. Colloques, 42 C4 (1981) C4-609-C4-612 DOI: 10.1051/jphyscol:19814133