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Updated: May 11, 2026

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy
Published on: October 23, 2018
Electrically driven ultraviolet random lasing from an n-MgZnO/i-ZnO/SiO2/p-Si asymmetric double heterojunction
Zhi-Feng Shi1, Yuan-Tao Zhang, Xiao-Chuan Xia
1State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
Abstract:
Electrically pumped lasing action has been realized in ZnO from an n-MgZnO/i-ZnO/SiO2/p-Si asymmetric double heterostructure, an ultralow threshold of 3.9 mA was obtained. The mechanism of the laser is associated with the in-plane random resonator cavities formed in the ZnO films and the elaborate hollow-shaped SiO2 cladding pattern, which prevent the lateral diffusion of injection current and ultimately lower the threshold current of the laser diode. In addition, a waveguide mechanism due to different refractive indices of three epilayers enhances the guided optical field on the ZnO side, resulting in an improved light extraction efficiency.
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