ELECTRICAL PROPERTIES AND PHOTOLUMINESCENCE OF AMORPHOUS SILICON X.B. Liao, G.L. Kong, X.R. Yang, P.D. Wang, Y.Q. Chao, Z.M. Chen et C.L. Liu J. Phys. Colloques, 42 C4 (1981) C4-663-C4-666 DOI: 10.1051/jphyscol:19814146