Effects of Current, Temperature, and Chip Size on the Performance of AlGaInP-Based Red Micro-Light-Emitting Diodes with Different Contact Schemes
- Title
- Effects of Current, Temperature, and Chip Size on the Performance of AlGaInP-Based Red Micro-Light-Emitting Diodes with Different Contact Schemes
- Author
- 심종인
- Issue Date
- 2021-09
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v. 10, NO 095001, Page. 1-6
- Abstract
- We have investigated the performance of AlGaInP-based red micro-light-emitting diodes (micro-LEDs) with different n-type contact schemes as functions of current, ambient temperature, and chip size. The samples with AuGe/Ni/Au contact revealed wider full width at half maximum of electroluminescence than that with the Pd/Ge contact. All samples also exhibited broad peaks at wavelengths between ∼632 and ∼640 nm, whose intensity depended on the type of contact schemes and temperature. Regardless of the contact schemes, the 10 μm-size samples showed a larger temperature-dependent reduction in the output power at current density of ˂50 A cm−2 than the 100 μm-size ones. Above 100 A cm−2, however, both samples showed similar temperature dependence. Irrespective of the contact schemes, the main peak of the 100-μm samples was red-shifted, whereas no red-shift was detected in the 10-μm samples. The third peak of the AuGe-based contact samples became more dominant at 700 A cm−2 than the main peak, whereas that of the PdGe contact samples became more dominant at 1000 A cm−2. Based on the chip size, current, contact scheme, and temperature dependence, the performance degradation of the red micro-LEDs is described and discussed.
- URI
- https://iopscience.iop.org/article/10.1149/2162-8777/ac2029https://repository.hanyang.ac.kr/handle/20.500.11754/170579
- ISSN
- 21628769; 21628777
- DOI
- 10.1149/2162-8777/ac2029
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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