期刊
JOURNAL OF LUMINESCENCE
卷 243, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2021.118621
关键词
CuO; Electron blocking layer; Electroluminescence; Light-emitting diode
类别
资金
- National Natural Science Foundation of China [61674052, 11404097]
- Outstanding Youth Foundation of Henan Scientific Committee [212300410041]
- Key Scientific and Technological Projects in Henan Province [212102210223]
- Key Scientific Research Projects of Higher Education Institutions of Henan Province, China [20A140012]
- Training Plan of Young Backbone Teachers in Colleges and Universities of Henan Province [2018GGJS054]
- Student Research Training Program of Henan University of Science and Technology [2020180, 2020187]
The influence of ambient temperature on the electrical characteristics of p-CuO/i-Ga2O3/n-GaN heterojunction diode was studied, showing typical diode rectification characteristics with high rectification ratios at different ambient temperatures. It was found that the temperature sensitivity of the forward current was greater than that of the reverse current at driving voltages of +/- 3V.
With the development of semiconductor technology, ultraviolet light-emitting diodes (UV-LEDs) had been widely used in lighting, sterilisation, biological medical and other fields, which had broad market application prospects. The p-CuO/i-Ga2O3/n-GaN heterojunction diode was fabricated by radio frequency (RF) magnetron sputtering technology. The influence of ambient temperature on the electrical characteristics of diodes was studied, which exhibited typical diode rectification characteristics with high rectification ratios at different ambient temperatures. It was found that the temperature sensitivity of the forward current was greater than that of the reverse current when the driving voltage were +/- 3 V. Moreover, two luminescence peaks could be detected by the electroluminescence (EL) measurement, one was a strong ultraviolet (UV) luminescence peak at -370 nm, and the other was a wide deep-level luminescence peak at -500 nm. Eventually, the luminescence mechanism was discussed from the aspect of the energy band diagram of the heterojunction diode.
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