N-ZNO/N-GAN/N-ZNO HETEROJUNCTION-BASED BIDIRECTIONAL ULTRAVIOLET LIGHT-EMITTING DIODE AND PREPARATION METHOD THEREFOR
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机译:N-ZNO/N-GAN/N-ZNO异质结基双向紫外发光二极管及其制备方法
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摘要
The present invention discloses a bidirectional ultraviolet light emitting diode (UV LED) based on N—ZnO/N—GaN/N—ZnO heterojunction as well as its preparation method. The LED includes: N—ZnO microwires, a N—GaN film, a PMMA protective layer and alloy electrodes; and its preparation method includes the following steps: lay two N—ZnO microwires on the N—GaN film, then spin-coat a PMMA protective layer on the film to fix the N—ZnO microwires until the PMMA protective layer spreads over the N—ZnO microwires, and then place the film on a drying table to solidify the PMMA protective layer; then etch the PMMA protective layer with O2 to expose the N—ZnO microwires, and prepare alloy electrodes on different N—ZnO microwires to construct a N—ZnO/N—GaN/N—ZnO heterojunction to constitute a complete device. The present invention constructs an N/N/N symmetrical structure; the device is composed of N—ZnO and N—GaN, emits light in the ultraviolet region and has a small turn-on voltage.
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