| Autor: |
Sun, Bo, Zhao, Lixia, Wei, Tongbo, Yi, Xiaoyan, Liu, Zhiqiang, Wang, Guohong, Li, Jinmin |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Jun2013, Vol. 113 Issue 24, p243104, 6p, 1 Color Photograph, 2 Diagrams, 1 Chart, 3 Graphs |
| Abstrakt: |
Light extraction efficiency enhancement of bulk GaN light-emitting diodes (LEDs) in the shape of truncated-pyramid has been investigated. Compared with the reference LEDs, an enhancement of up to 46% on the light output power from rectangle-shaped LEDs chip with the inclination angle (∼44°) has been observed. Compared with the common triangle-shaped and hexagon-shaped LEDs, large size of conventional rectangular LEDs shaped with truncated-pyramid shows more obvious enhancement in light extraction efficiency. In addition, the ray-tracing simulations results show that light extraction efficiency was influenced not only by inclination angle but also by dimension size. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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