| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
대학원생 구두발표(발표10분) |
| 제목 |
Simultaneous Enhancement of Light Extraction and Device Stability of Organic Light Emitting Diodes from Corrugated and Continuous PEDOT:PSS film |
| 초록 |
we demonstrate a simple and efficient method for enhancing the light extraction and device stability of organic light emitting diodes by incorporating polystyrene nanospheres (PS NSs) into a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole-injection layer (HIL). By embedding large size PS NSs compared with PEDOT:PSS thickness, corrugated and continuous PEDOT:PSS film (PS NSs-PEDOT:PSS) was produced spontaneously via one step fabrication. Remarkably enhanced light extraction was demonstrated in corrugated OLEDs such as 8.5 % of external quantum efficiency, 30.9 cd/A of current efficiency and 8.6 lm/W of power efficiency. Furthermore, the corrugated device shows Lambertian emission pattern without serious distortion or angular dependence of emission spectra. The ambient stability of device using PS NSs-PEDOT:PSS HIL was also significantly improved by a factor of 4 compared with the control device due to the utilization of only small amounts PEDOT:PSS in HIL. |
| 저자 |
이창연, 강동진, 강현범, 김태수, 박준우, 이재호, 유승협, 김범준
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| 소속 |
KAIST |
| 키워드 |
polymer nanospheres; PEDOT:PSS; organic light emitting diodes; light extraction; device stability
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| E-Mail |
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