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Enhancing light conversion efficiency of YAG:Ce phosphor substrate using nanoimprinted functional structures
- Authors
- Huh, Daihong; Kim, Wonjoong; Kim, Kwan; Son, Soomin; Park, Jaemin; Ju, Sucheol; Chae, Dongwoo; Baek, Seungho; Lee, Heon
- Issue Date
- 3-4월-2020
- Publisher
- IOP PUBLISHING LTD
- Keywords
- nanoimprint lithography; phosphor; functional pattern; moth-eye; micro-cone
- Citation
- NANOTECHNOLOGY, v.31, no.14
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 31
- Number
- 14
- ISSN
- 0957-4484
- Abstract
- A phosphor substrate converts a moderate amount of blue light to green light to produce white light. In this study, we have successfully demonstrated the enhancement of the light extraction efficiency of YAG:Ce phosphor substrate using a simple imprint process. Spin-on-glass materials were used to fabricate a pattern on the surface of a phosphor substrate, and nano- and micro-scale patterns were formed to test the performance according to the size of pattern. The light extraction efficiency of the phosphor substrate with a micro-cone pattern increased by 33.2% compared with the flat phosphor substrate.
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