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Updated: May 8, 2026

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy
Published on: October 23, 2018
MgZnO p-n heterostructure light-emitting devices
Ji-Shan Liu1, Chong-Xin Shan, Bing-Hui Li
1State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China.
Researchers developed novel MgZnO heterostructure light-emitting diodes (LEDs) achieving ultraviolet emission at 355 nm. This breakthrough represents the shortest electroluminescence (EL) emission reported for ZnO-based p-n junction LEDs.
Area of Science:
- Materials Science
- Semiconductor Physics
- Optoelectronics
Background:
- Magnesium Zinc Oxide (MgZnO) is a promising material for optoelectronic applications.
- Developing efficient ultraviolet (UV) light-emitting diodes (LEDs) is crucial for various technologies.
- Achieving p-type conductivity in MgZnO has been a significant challenge.
Purpose of the Study:
- To fabricate MgZnO heterostructure LEDs.
- To achieve efficient ultraviolet emission from these devices.
- To report the shortest electroluminescence (EL) emission in ZnO-based p-n junction LEDs.
Main Methods:
- Fabrication of p-Mg(0.35)Zn(0.65)O/n-Mg(0.20)Zn(0.80)O heterostructures.
- Realization of p-type Mg(0.35)Zn(0.65)O film using lithium-nitrogen codoping.
- Characterization of electroluminescence (EL) spectra at room temperature.
Main Results:
- Successful fabrication of MgZnO heterostructure LEDs.
- Observation of dominant ultraviolet emission peaked at approximately 355 nm.
- Attribution of emission to the near-band-edge emission of the n-type Mg(0.20)Zn(0.80)O film.
Conclusions:
- This work reports the first MgZnO heterostructured LEDs.
- The fabricated devices exhibit efficient UV emission at 355 nm.
- This represents the shortest EL emission achieved in ZnO-based p-n junction LEDs to date.
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