The reduction of threading dislocations in GaN using a GaN nanocolumn interlayer
The reduction of threading dislocations in GaN using a GaN nanocolumn interlayer
复制标题
使用 GaN 纳米柱中间层减少 GaN 中的穿透位错
DOI:
10.1002/pssc.200778562
复制
发表时间:
2008
期刊:
影响因子:
--
通讯作者:
Meshi L
中科院分区:
文献类型:
--
作者:
Meshi L
Epitaxial lateral overgrowth (ELO) has been used to reduce threading dislocation (TD) densities in GaN. This paper reports transmission and scanning electron microscopy studies of TDs in GaN films grown by ELO on GaN nanocolumns produced either during growth by MBE (method 1), or by self‐organised patterning on a uniform layer grown by MOCVD (method 2). In method 1, isolated nanocolumns grew without TDs, but some TDs formed when nanocolumns coalesced. Although some of these TDs extended through the overlayer, extensive lateral migration of others, depending on the dislocation type, led to dislocation annihilation, lowering the overall TD density. In method 2, a similar process of lateral migration of TDs was observed during ELO, resulting in a continuous GaN overlayer with TD densities less than 108cm–2. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
R. Davis
通讯作者:
R. Davis
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
H. Okumura;M. Shimizu;X. Shen;T. Ide
通讯作者:
T. Ide
影响因子:
4
作者:
LIN, ME;SVERDLOV, B;MORKOC, H
通讯作者:
MORKOC, H