Impact of thermal annealing on interfacial layer and electrical properties of a-SiNx : H/Si Sarab Preet Singh, G. Vijaya Prakash, S. Ghosh, Sanjay Rai and P. Srivastava EPL, 90 2 (2010) 26002 Published online: 11 May 2010 DOI: 10.1209/0295-5075/90/26002