| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Highly Circularly Polarized White Light using a Combination of White Polymer Light-Emitting Diode and Wideband Cholesteric Liquid Crystal Reflector |
| 초록 |
We present a simple and intriguing device that generates highly circularly polarized white light. It comprises white polymer light-emitting diodes (WPLEDs) attached to a wideband cholesteric liquid crystal (CLC) reflector with a wide photonic bandgap (PBG) covering the visible range. The degree of 10 circular polarization realized is very high over the visible range. The wide PBG was realized by introducing a gradient in pitch of the cholesteric helix by controlling the twisting power within the CLC medium. WPLEDs fabricated using a ternary (red, green, and blue) fluorescent polymer blend with the same moiety showed a low turn-on voltage, high brightness, high efficiency, and good color stability. |
| 저자 |
서호운1, 이현정1, 이보람1, 최석원2, 송명훈1
|
| 소속 |
1울산과학기술대, 2경희대 |
| 키워드 |
White LED; PLED; Liquid Crystal
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| E-Mail |
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