Identifying dislocations and stacking faults in GaN films by scanning transmission electron microscopy
Identifying dislocations and stacking faults in GaN films by scanning transmission electron microscopy
复制标题
通过扫描透射电子显微镜识别 GaN 薄膜中的位错和堆垛层错
DOI:
10.1088/2053-1591/3/8/086401
复制
发表时间:
2016-08
影响因子:
2.3
通讯作者:
Ke XU
中科院分区:
文献类型:
--
作者:
Jicai Zhang;Jinping Zhang;Jianfeng Wang;Ke XU
The application of annular bright field (ABF) and medium-angle annular dark field (MAADF) scanning transmission electron microscopy (STEM) imaging to crystalline defect analysis has been extended to dislocations and stacking faults (SFs). Dislocations and SFs have been imaged under zone-axis and two-beam diffraction conditions. Comparing to conventional two-beam diffraction contrast images, the ABF and MAADF images of dislocations and SFs not only are complementary and symmetrical with their peaks at dislocation core and SFs plane, but also show similar extinction phenomenon. It is demonstrated that conventional TEM rules for diffraction contrast, i.e. g · b and g · R invisibility criteria remain applicable. The contrast mechanism and extinction of dislocation and SFs in ABF and MAADF STEM are illuminated by zero-order Laue zone Kikuchi diffraction.
登录
查看更多内容
影响因子:
2.2
作者:
Z. Wang
通讯作者:
Z. Wang
影响因子:
3.7
作者:
Stampfl, C;Van de Walle, CG
通讯作者:
Van de Walle, CG
影响因子:
3.2
作者:
Xinru Wu;L. M. Brown;D. Kapolnek;S. Keller;B. Keller;S. Denbaars;J. Speck
通讯作者:
Xinru Wu;L. M. Brown;D. Kapolnek;S. Keller;B. Keller;S. Denbaars;J. Speck
影响因子:
56.9
作者:
Barnard, J. S.;Sharp, J.;Midgley, P. A.
通讯作者:
Midgley, P. A.
影响因子:
41.2
作者:
Ishikawa, Ryo;Okunishi, Eiji;Abe, Eiji
通讯作者:
Abe, Eiji