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학술지 The Optical Effects of Capping Layers on the Performance of Transparent Organic Light-Emitting Diodes
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저자
허진우, 문제현, 이주원, 조두희, 신진욱, 한준한, 황주현, 주철웅, 이정익, 추혜용
발행일
201204
출처
IEEE Photonics Journal, v.4 no.1, pp.39-47
ISSN
1943-0655
출판사
IEEE
DOI
https://dx.doi.org/10.1109/JPHOT.2011.2176478
협약과제
10MB7500, 고효율 백색 OLED 소자 기술 개발, 추혜용
초록
In transparent organic light-emitting diodes (TOLEDs), the asymmetry in the optical paths causes difference between the bottom and top emitting lights, both in emissions and spectral distributions. Capping layers (CLs) can be used as an optical functional to enhance the emissions and adjust the spectral distributions. Here, we report on the optical effects of an organic CL, 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), on the characteristics of TOLEDs Both simulated and experimental results are presented. We demonstrate the possibility of improving the total emission and achieving spectral matching of bottom and top emissions by varying the CL thickness. The optical effects of CLs have been interpreted from interference perspectives. Finally, we have presented a guideline that is practically useful in designing high-performance TOLEDs with CLs. © 2009 IEEE.
키워드
bottom to top ratio, capping layer, high efficiency, refractive-index, spectra matching, Transparent organic light-emitting diodes
KSP 제안 키워드
Capping layer, High performance, Optical effects, Organic light-emitting diodes(OLEDS), Spectral matching, Total emission, high efficiency, light-emitting diode(LED), refractive index, spectral distribution, transparent organic light-emitting diodes