ELECTRON DRIFT MOBILITY MEASUREMENT IN UNDOPED TRIODE DC SPUTTERED a-Si : H J.F. Peyre, J. Baixeras, D. Mencaraglia, P. Andro and C. Longeaud J. Phys. Colloques, 42 C4 (1981) C4-163-C4-166 DOI: 10.1051/jphyscol:1981433