Copper, lithium, and hydrogen passivation of boron in c-Si

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Abstract

The geometries and chemical structures of lithium- and copper-passivated substitutional B in crystalline Si are calculated and compared to the ones of hydrogen-passivated B. The calculations are done at the approximate ab initio several clusters. In contrast to H which bridges an acceptor-Si bond and forms a stronger bond with Si than with the acceptor, Li and Cu are at the antibonding site to the boron atom, and form Li-B and Cu-B bonds. Their wave functions overlap with several host atoms. The results show that copper is a viable candidate as the observed passivator X.

Original languageEnglish
Pages (from-to)5447-5450
Number of pages4
JournalPhysical Review B
Volume41
Issue number8
DOIs
StatePublished - 1990

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