Investigate on Structure and Optical Properties of ZnO Nanostructures Grown on a-GaN/r-Sapphire

被引:2
|
作者
Yu, Naisen [1 ,2 ]
Dong, Dapeng [1 ]
Qi, Yan [1 ]
Yang, Rui [1 ]
Gui, Jing [1 ]
机构
[1] Dalian Nationalities Univ, Sch Phys & Mat Engn, Liaoning Key Lab Optoelect Films & Mat, Dalian 116600, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
a-Plane ZnO; Aqueous Solutions; Different Growth Time; FILMS; FABRICATION; ZNO(0001);
D O I
10.1166/jnn.2018.13869
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
ZnO nanostructures were directly grown on a-GaN/r-sapphire with different growth time via aqueous method. Structural and optical properties of the nanostructures were investigated by using a variety of techniques including X-ray diffraction (XRD), scan electron microscope (SEM), room-temperature photoluminescence (PL), and Raman scattering. The results showed the growth mechanism of ZnO nanostructures grown on a-GaN is Volmer-Weber (VW) mode, which is due to the high interfacial free-energy between a-plane ZnO and GaN. Meanwhile, compressive strains were revealed to exist by the optical characterizations. And the strengths were found to reduce with increasing growth time.
引用
收藏
页码:2072 / 2074
页数:3
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