Investigation of Quantum Dot Color Conversion in GaN-Based Micro Light-Emitting Diodes with Distributed Bragg Reflector and Hybrid Distributed Bragg Reflection
碩士 === 國立成功大學 === 微電子工程研究所 === 102 === To effectively generate the red light for the micro-projection technique, the minimized the gallium nitride (GaN) blue light emitting diodes (LED) were used to excite the quantum dots (QDs). The distributed bragg reflector (DBR) and the hybrid Bragg reflector w...
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| Format: | Others |
| Language: | zh-TW |
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2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/01360393439803002430 |
| Summary: | 碩士 === 國立成功大學 === 微電子工程研究所 === 102 === To effectively generate the red light for the micro-projection technique, the minimized the gallium nitride (GaN) blue light emitting diodes (LED) were used to excite the quantum dots (QDs). The distributed bragg reflector (DBR) and the hybrid Bragg reflector were respectively stacked at the top and bottom of the LEDs to reflect the emitted blue light. The multi-reflected blue light can excite more QDs in the slurry layer and improve the red light output. Furthermore, the zinc-oxide (ZnO) nanorod arrays were grown on the output side to lead more blue light be efficiently reflected at the top distributed Bragg reflector to generate red light output.The experimental results showed that The CIE chromaticity coordinate of the LEDs with ZnO nanorod and DBRs was located at (0.59, 0.26) which is much closer to the red light and the LEDs with the top DBR、the bottom hybrid Bragg reflector and ZnO nanorod arrays increase the area of red illumination by 41.6 %.
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