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Lookup NU author(s): Professor Patrick Briddon
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We report on the energetics, electrical and optical activity of small self-interstitial (I3 and I4) clusters in Si, found from ab-initio density-functional modeling studies. I4 possesses nine local vibrational modes above the Raman edge, which account for up to three dipole-allowed vibronic transitions observed in recent experiments associated with the X-photoluminescent line. Another prominent photoluminescent line (known as the W-line) that shows a trigonal stress-induced splitting pattern, has been previously assigned to I3. Our analysis of the LVMs of a metastable form of I3 support this assignment.
Author(s): Carvalho A, Jones R, Coutinho J, Torres VJB, Briddon PR
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 11th International Autumn Meeting on Gettering and Defect Engineering in Semiconductor Technlogy, GADEST 2005
Year of Conference: 2005
Notes: Code 70564
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Series Title: Diffusion and Defect Data Pt.B: Solid State Phenomena