Sökning: onr:"swepub:oai:DiVA.org:liu-45100" >
Raman Studies of Ga...
Raman Studies of GaNP Alloy
-
- Buyanova, Irina, 1960- (författare)
- Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material
-
- Chen, Weimin, 1959- (författare)
- Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material
-
Goldys, E. M. (författare)
-
visa fler...
-
Xin, H. P. (författare)
-
Tu, C. W. (författare)
-
visa färre...
-
(creator_code:org_t)
- Materials Research Society Symposium - Proceedings, Vol. 693 : MRS, 2002
- 2002
- Engelska.
- Relaterad länk:
-
http://www.mrs.org/s...
-
visa fler...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Raman scattering (RS) spectroscopy is employed to characterize the effect of nitrogen on structural properties of GaNxP1-x alloy with nitrogen composition up to 3 %. Two-mode behavior of the alloy is clearly shown. The frequency of the GaP-like LO phonons is found to decrease with N composition as -1.13 cm-1 x. This dependence is proposed to be largely due to the biaxial strain in the GaNP epilayers, as a result of lattice mismatch to the GaP substrate. The frequency of the GaN-like phonons is found to be more sensitive to nitrogen content, increasing with the rate of +2.6 cm-1x. The addition of nitrogen is also found to cause a dramatic quenching of the two-phonon Raman scattering and an appearance of the zone edge GaP-like vibrations. These effects are suggested to reflect local distortion in the GaNP lattice induced by nitrogen, as well as possible clustering of N atoms.
Nyckelord
- NATURAL SCIENCES
- NATURVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)