Zobrazeno 1 - 10
of 16
pro vyhledávání: '"N. J. Jeffs"'
Publikováno v:
physica status solidi (a). 188:275-278
AlGaN/GaN heterojunction field effect transistors were tested at elevated temperatures, up to +180°C, to determine the effect on the device performance. Ageing of the device during these measurements was also studied. A comparison between devices fa
Autor:
Izabella Grzegory, S. Porowski, Sergei V. Novikov, N. J. Jeffs, C. T. Foxon, Tin S. Cheng, D Korakakis
Publikováno v:
Journal of Crystal Growth. 207:1-7
An investigation of the conditions giving rise to surface reconstruction for GaN grown by molecular beam epitaxy on (0 0 0 1) bulk GaN substrates has been carried out. The results of different surface reconstructions were investigated by supplying Ga
Autor:
N. J. Jeffs, Izabella Grzegory, Tin S. Cheng, C. T. Foxon, C.S. Davis, Sergei V. Novikov, D Korakakis, O.H. Hughes, S. Porowski
Publikováno v:
physica status solidi (a). 176:723-726
We report on the mechanisms giving rise to surface reconstruction for homo-epitaxial GaN grown by molecular beam epitaxy on (0001-) bulk GaN substrates. We have studied the surface reconstruction observed during growth and investigated the effects of
Publikováno v:
Journal of Crystal Growth. :388-391
RHEED studies of the reconstructions obtained during growth of GaN on a range of different substrates are reported. The effects of pre-nitridation of the substrate, of growth temperature and also of surface contamination by oxygen and arsenic are dis
Autor:
Tin S. Cheng, N. J. Jeffs, J.F.W Mosselmans, L.B Flannery, A.D Smith, C. T. Foxon, A.V Blant, Ian Harrison
Publikováno v:
Materials Science and Engineering: B. 59:218-221
We have been studying the structural properties of Group III-nitrides by EXAFS. Previously we have investigated bulk Group III-nitrides and its alloys and have demonstrated that we can grow the full range of alloys from AlN to InN at low temperatures
Autor:
O.H. Hughes, Tin S. Cheng, A.E. Nikolaev, N. J. Jeffs, Yu. V. Melnik, Sergei V. Novikov, C. T. Foxon, Vladimir Dmitriev
Publikováno v:
Surface Science. 421:377-385
We report on an investigation of the mechanisms giving rise to surface reconstruction for GaN grown by molecular beam epitaxy (MBE) on a range of different substrates. We have studied the effects of surface contamination by oxygen or arsenic and demo
Autor:
R. P. Campion, Yu. V. Melnik, Vladimir Dmitriev, D. Tsvetkov, O.H. Hughes, N. J. Jeffs, Sergey Stepanov, D Korakakis, Tin S. Cheng, A. E. Cherenkov, Sergei V. Novikov, C. T. Foxon, V. B. Lebedev
Publikováno v:
Scopus-Elsevier
We report on an investigation of the initial stages of growth by molecular beam epitaxy (MBE) of GaN layers on composite substrates consisting of hydride vapour phase epitaxial (HVPE) GaN films on SiC substrates. In situ reflection high energy electr
Autor:
L. M. Fedorov, Yu. V. Zhilyaev, V. M. Botnaryuk, I. N. Goncharuk, Sergei V. Novikov, C. T. Foxon, Ian Harrison, Tin S. Cheng, N. J. Jeffs, Vasily V. Bel'kov, V.P Ulin, N. I. Katsavets
Publikováno v:
Journal of Crystal Growth. 187:29-34
We have studied the growth by hydride vapour phase epitaxy (HVPE) of GaN on GaN layers grown by molecular beam epitaxy (MBE) on sapphire and GaAs(1 1 1)B substrates. For growth on the GaN/sapphire composite substrates, the properties of the HVPE GaN
Autor:
N. J. Jeffs, J.W. Orton, C. T. Foxon, L.B Flannery, D J Dewsnip, Tin S. Cheng, Yu.A. Kudriavtsev, Sergei V. Novikov, B. Ya. Ber, Ian Harrison
Publikováno v:
Materials Science Forum. :1217-1220
Autor:
A.V Blant, J.F.W Mosselmans, Tin S. Cheng, C. T. Foxon, P.G Harrison, A J Dent, C Bailey, N. J. Jeffs
Publikováno v:
Materials Science and Engineering: B. 50:38-41
We have been studying the structural properties of Group III-Nitrides on Si substrates. We have shown from X-ray data that alloys of (AlGa)N and (InGa)N can be grown by plasma enhanced molecular beam epitaxy on oxidised (100) Si substrates with good