CHARGE-TRANSPORT ALONG AND ACROSS A-SI-H/A-SIC-H MULTILAYERS

In this paper small charge collection as well as drift mobility studies in multilayers for high and low barriers are presented for carrier drift both along and across the layers. The total collection of photogenerated electrons was measured at extremely high electric fields for both low and thick (30 nm) and high and thin barriers (1-2 nm). The electron drift time has been measured by the time-of-flight technique. The transport nature is considered to be field-stimulated thermal activation for low barriers and tunnelling for thin barriers.