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Enhanced ultraviolet electroluminescence from ZnO nanoparticles via decoration of partially oxidized Al layer
- Source :
- Optics express. 28(3)
- Publication Year :
- 2020
-
Abstract
- We construct the ZnO-based superluminescent light-emitting diodes (SLEDs) by spin-coating ZnO nano-particles onto p-GaN/sapphire substrate. By inserting another thin Al layer to form an n-ZnO/Al/n-ZnO/p-GaN sandwich structured SLD, the intensities of the photoluminescence and electroluminescence were greatly enhanced, which can be attributed to the surface plasmon resonance of this Al layer. The tendency of the intensities of the entire electroluminescence spectra shows a super-linearly behavior with increasing the forward bias. Besides, the spectral bandwidth is narrowed down enormously owing to the achievement of the SLD. Furthermore, the interfacial emissions between ZnO/GaN are effectively suppressed by partially oxidizing the Al layer.
- Subjects :
- Photoluminescence
Materials science
business.industry
Surface plasmon
02 engineering and technology
Electroluminescence
021001 nanoscience & nanotechnology
medicine.disease_cause
01 natural sciences
Atomic and Molecular Physics, and Optics
010309 optics
Optics
0103 physical sciences
medicine
Optoelectronics
Spontaneous emission
Surface plasmon resonance
0210 nano-technology
business
Layer (electronics)
Ultraviolet
Diode
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 28
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Optics express
- Accession number :
- edsair.doi.dedup.....6a4b6c22afb474b73e4ca79196982ee3