Lookup NU author(s): Dr Jose Coutinho,
Dr Mark Rayson,
Professor Patrick Briddon
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We analyse the formation energy of interstitial boron (Bi) and the properties of the defect resulting from its association with an oxygen dimer (BiO2i) to evaluate the possibility that it may be the slow-forming centre responsible for the light-induced degradation of B-doped Si solar cells. However, we find that the formation energy of Bi is too high, and therefore its concentration is negligible. Moreover, we find that the lowest energy form of BiO2i is a shallow donor, and the deep donor form is high in energy. Lowest energy structure of the BiO2i defect.
Author(s): Carvalho A, Santos P, Coutinho J, Jones R, Rayson MJ, Briddon PR
Publication type: Article
Publication status: Published
Journal: physica status solidi (a)
Print publication date: 24/07/2012
ISSN (print): 1862-6300
ISSN (electronic): 1862-6319
Publisher: Wiley - V C H Verlag GmbH & Co. KGaA
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