An investigation of hydrogenized amorphous Si structures with Doppler broadening positron annihilation techniques

M. P. Petkov, T. Marek, P. Asoka-Kumar, K. G. Lynn, R. S. Crandall, A. H. Mahan

Research output: Article

10 Citations (Scopus)


In this letter, we examine the feasibility of applying positron annihilation spectroscopy to the study of hydrogenized amorphous silicon (a-Si:H)-based structures produced by chemical vapor deposition techniques. The positron probe, sensitive to open volume formations, is used to characterize neutral and negatively charged silicon dangling bonds, typical for undoped and n-doped a-Si:H, respectively. Using depth profiling along the growth direction a difference was observed in the electronic environment of these defects, which enables their identification in a p-i-n device.

Original languageEnglish
Pages (from-to)99-101
Number of pages3
JournalApplied Physics Letters
Issue number1
Publication statusPublished - dec. 1 1998


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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