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학술지 Luminance Enhancement of Top-emitting Blue Organic Light Emitting Diodes Encapsulated with Silicon Nitride Thin Films by a Double-layer Nano-structure
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저자
조두희, 박영삼, 최수경, 조현수, 권병화, 신진욱, 조남성
발행일
202203
출처
Optics Express, v.30 no.7, pp.11959-11972
ISSN
1094-4087
출판사
Optical Society of America (OSA)
DOI
https://dx.doi.org/10.1364/OE.452954
협약과제
22ZB1200, ICT 소재·부품·장비 자립기술 및 도전기술 개발, 황치선
초록
Even though it is in high demand to introduce a nano-structure (NS) light extraction technology on a silicon nitride to be used as a thin film encapsulation material for an organic light-emitting diode (OLED), only an industry-incompatible wet method has been reported. This work demonstrates a double-layer NS fabrication on the silicon nitride using a two-step organic vapor phase deposition (OVPD) of an industry-compatible dry process. The NS showed a wrinkle-like shape caused by coalescence of the nano-lenses. The NS integrated top-emitting OLED revealed 40 percent enhancement of current efficiency and improvement of the luminance distribution and color change according to viewing angle.
KSP 제안 키워드
Blue organic light emitting diodes, Color changes, Double layer, Dry process, Extraction technology, Industry-compatible, Luminance enhancement, Nano-structures, Organic light-emitting diodes(OLEDS), Silicon Nitride, Thin film encapsulation