Optimization of nano-honeycomb structures for flexible w-LEDs
| Autor: | Chung-Hsiang Lin, Huang-Yu Lin, Chih-Ming Weng, Yi-Pai Huang, Chyong-Hua Chen, Xin-Yin Chen, Hao-Chung Kuo, Tzu-Yu Chen, Jingxing Shi, Yung-Min Pai, Chien-Chung Lin, Martin D. B. Charlton, Huang-Ming Philip Chen |
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| Rok vydání: | 2017 |
| Předmět: |
Fabrication
Materials science business.industry Phosphor 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Honeycomb structure Optics Solar cell efficiency law 0103 physical sciences Nano Optoelectronics 0210 nano-technology business Luminous efficacy Diode Light-emitting diode |
| Zdroj: | Optics Express. 25:20466 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.25.020466 |
| Popis: | This study presents the low cost fabrication of flexible white-light-emitting diodes (w-LEDs) with nano-honeycomb-structured phosphor films. Extending the dimensions of the nano-honeycomb structures improved the color uniformity of the flexible samples, and the 950-nm pattern sample demonstrated optimal color uniformity because this nano-pattern exhibited an excellent diffusion ability owing to its pitch size. In addition to color uniformity, the use of this nano-pattern improved the luminous efficiency. The 750-nm pattern exhibited the highest luminous efficiency (235.8 lm/W), which was approximately 7% higher than that exhibited by a non-patterned phosphor film sample. Thus, flexible w-LEDs with nano-honeycomb structure optimization have great potential to be used as next-generation lighting sources. |
| Databáze: | OpenAIRE |
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