Effects of an in-situ SiNx interlayer on structural and optical properties for nonpolar a-plane GaN epilayers

被引:7
作者
Zhao, Jianguo [1 ]
Zhang, Xiong [2 ]
Fan, Aijie [2 ]
Chen, Shuai [2 ]
He, Jiaqi [2 ]
Pan, Jiangyong [1 ]
Chen, Daihua [3 ]
Tian, Ming [3 ]
Feng, Zhe Chuan [3 ]
Chang, Jianhua [1 ]
Liu, Qingquan [1 ]
Ge, Junxiang [1 ]
机构
[1] Nanjing Univ Informat Sci & Technol, Sch Elect & Informat Engn, Nanjing 210044, Peoples R China
[2] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Jiangsu, Peoples R China
[3] Guangxi Univ, Lab Optoelect Mat & Detect Technol, Nanning 530004, Guangxi, Peoples R China
关键词
STACKING-FAULTS; EPI-LAYERS; REDUCTION; SAPPHIRE; ANISOTROPY; GROWTH; FILMS;
D O I
10.7567/1347-4065/ab6004
中图分类号
O59 [应用物理学];
学科分类号
摘要
The structural and optical properties for a nonpolar GaN epilayer grown with an in situ SiNx interlayer was studied intensively. The superficial defects were decreased by 83% and root-mean-square was reduced by 61% for nonpolar GaN with an SiNx interlayer. The in situ SiNx was revealed to be powerful to block basal-plane stacking faults (BSFs) in nonpolar GaN because BSF density was reduced from 1.83 x 10(5) to 8.13 x 10(4) cm(-1) and BSF-related emission was remarkably suppressed by the SiNx interlayer. Moreover, the fast decay lifetime increased from 16.2 to 71.1 ps, which implied the non-radiative recombination in nonpolar GaN was significantly suppressed after the insertion of the SiNx layer.
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页数:4
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