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Optical and electrical measurements of a-SiC:H/c-Si heterojunctions prepared by plasma enhanced chemical vapour deposition

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2 Author(s)
T. C. Lo ; Hong Kong Univ. of Sci. & Technol., Clear Water Bay, Hong Kong ; H. C. Huang

A series of optical and electrical measurements of a-SiC:H/c-Si heterojunctions prepared by a parallel-plate plasma-enhanced chemical vapor deposition system are reported. All the samples underwent various passivation processes. It is observed that in situ H2/Ar plasma prior cleaning and H2 plasma annealing can reduce the dark current of the heterojunction by three orders of magnitude. Higher process pressure and lower power density also favour good interface properties.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 15 )