AlN substrates and epitaxy results

被引:29
作者
Helava, Heikki [1 ]
Chemekova, Tat'jana [2 ]
Avdeev, Oleg [2 ]
Mokhov, Eugeny [2 ]
Nagalyuk, Sergey [2 ]
Makarov, Yuri [2 ]
Ramm, Mark [1 ]
机构
[1] Helava Syst Inc, 181 Ind Ct,Ste B, Deer Pk, NY 11729 USA
[2] Nitride Crystals Ltd, St Petersburg 194256, Russia
来源
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7, NO 7-8 | 2010年 / 7卷 / 7-8期
关键词
AlN; growth from vapour; structure; defects; optical properties;
D O I
10.1002/pssc.200983619
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Aluminum nitride (AlN) is a true bulk-grown native substrate for III-nitrides. The crystals are grown by seeded physical vapor transport (PVT) using AlN seeds. AlN has high thermal conductivity ( comparable to, and perhaps higher than SiC), high bulk resistivity (>1x10(11) Ohm cm), high bulk-breakdown field (7-8 MV/cm), the highest surface acoustic wave (SAW) velocity and since it has the smallest lattice constant of the III-nitrides all AlInGaN compositions grown on AlN are in compression, thus making it easier to grow crack-free epitaxy. Additionally, AlN is transparent down to nearly 200 nm, making it attractive for deep UV LED structures. AlN has excellent cleavage planes making it suitable for edge-emitting lasers and low cost manufacturing. (c) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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页数:3
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