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Influence of Excitation Frequency on Raman Modes of In1−xGaxN Thin Films
Joint Authors
Thakur, J. S.
Naik, R.
Naik, V. M.
Dixit, A.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-05
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
Low energy optical modes of MBE-grown In1−xGaxN thin films with different values of x are investigated using Raman spectroscopy.
We also studied the influence of Raman excitation frequency using red and green lasers on scattering intensity of various Raman modes.
For those In1−xGaxN alloys whose bandgap energy is close to the red laser, a huge enhancement in the intensities of A1(LO) mode and its 2A1(LO) replica is observed when excited with red laser as compared to the green laser excitation.
We found that the energies of longitudinal optical modes (A1(LO) and 2A1(LO)) vary nonlinearly unlike the E2 mode with increasing Ga atomic fraction.
A Raman mode ~540 cm−1 was observed in all In1−xGaxN films with low energy red laser excitation but was absent with green laser excitation.
We attribute this mode to A1(TO) mode of the underneath GaN buffer layer.
American Psychological Association (APA)
Dixit, A.& Thakur, J. S.& Naik, V. M.& Naik, R.. 2013. Influence of Excitation Frequency on Raman Modes of In1−xGaxN Thin Films. Advances in Condensed Matter Physics،Vol. 2013, no. 2013, pp.1-4.
https://search.emarefa.net/detail/BIM-453227
Modern Language Association (MLA)
Dixit, A.…[et al.]. Influence of Excitation Frequency on Raman Modes of In1−xGaxN Thin Films. Advances in Condensed Matter Physics No. 2013 (2013), pp.1-4.
https://search.emarefa.net/detail/BIM-453227
American Medical Association (AMA)
Dixit, A.& Thakur, J. S.& Naik, V. M.& Naik, R.. Influence of Excitation Frequency on Raman Modes of In1−xGaxN Thin Films. Advances in Condensed Matter Physics. 2013. Vol. 2013, no. 2013, pp.1-4.
https://search.emarefa.net/detail/BIM-453227
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-453227