TY - JOUR
T1 - Experimental investigation of cubic to hexagonal ratio for GaN layers deposited on 3C-SiC/Si
AU - Camassel, J.
AU - Vicente, P.
AU - Planes, N.
AU - Allègre, J.
AU - Pankove, J.
AU - Namavar, F.
N1 - Funding Information:
Marianne Aznar acknowledges support from Cancer Research UK [grant no C8225/A21133] and of the NIHR Manchester Biomedical Research Centre .
Funding Information:
Jenny Bertholet acknowledges funding from the Stand Up to Cancer campaign for Cancer Research UK ( C33589/A19727 and C33589/A19908 ) and the CRUK ART-NET Network Accelerator Award (A21993) as well as NHS funding to the NIHR Biomedical Research Centre at The Royal Marsden and The Institute of Cancer Research .
PY - 1999/11
Y1 - 1999/11
N2 - We report results of a comparative investigation of GaN layers deposited on 3C-SiC/Si. Checking for the cubic form, neither X-ray nor micro-Raman scattering experiments could give an unambiguous answer. We show that selective excitation of the low temperature photoluminescence (LTPL) spectrum is a much better tool. Indeed, in many cases, a clear cubic signature was resolved around 3.25 eV (bound exciton feature) which exhibited, from time-resolved spectroscopy, a reasonably short decay-time of a few hundred picoseconds. From comparison of the corresponding intensity with the pure hexagonal one, we estimated the cubic/hexagonal ratio to range from negligibly small to ≈16%.
AB - We report results of a comparative investigation of GaN layers deposited on 3C-SiC/Si. Checking for the cubic form, neither X-ray nor micro-Raman scattering experiments could give an unambiguous answer. We show that selective excitation of the low temperature photoluminescence (LTPL) spectrum is a much better tool. Indeed, in many cases, a clear cubic signature was resolved around 3.25 eV (bound exciton feature) which exhibited, from time-resolved spectroscopy, a reasonably short decay-time of a few hundred picoseconds. From comparison of the corresponding intensity with the pure hexagonal one, we estimated the cubic/hexagonal ratio to range from negligibly small to ≈16%.
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U2 - 10.1002/(SICI)1521-3951(199911)216:1<253::AID-PSSB253>3.0.CO;2-W
DO - 10.1002/(SICI)1521-3951(199911)216:1<253::AID-PSSB253>3.0.CO;2-W
M3 - Article
AN - SCOPUS:0033242892
SN - 0370-1972
VL - 216
SP - 253
EP - 257
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 1
ER -