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NTIS 바로가기세라미스트 = Ceramist, v.22 no.3, 2019년, pp.218 - 229
이주영 (경희대학교 정보디스플레이학과)
The development of highly efficient thermally activated delayed fluorescence (TADF) materials is an active area of recent research in organic light emitting diodes (OLEDs) since the first report by Chihaya Adachi in 2011. Traditional fluorescent materials can harvest only singlet excitons, leading t...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
OLED의 장점은 무엇인가? | OLED 기술은 1987년 Tang과 VanSlyke에 의해 최초로 개발된 이후 많은 발전을 이루어 현재는 모바일 및 TV에 상용화되었다. OLED는 기존의 LCD와 달리 자발광이라는 특징 때문에 백라이트가 필요 없고 시인성이 좋으며 응답속도가 빠르고 시야각이 넓은 장점을 지닌다. 또한 고체 상태로 제작되므로 플렉시블 디스플레이로 제작이용이한 장점을 가지고 있어 차세대 디스플레이로 주목을 받고 있다. 그러나 발광 소재의 스펙트럼과 효율, 안정성에 의해 결정되는 최대 밝기 및 색 재현율은 무기물 발광소재를 쓰는 LCD가 유기물 발광소재를 사용하는 OLED 보다 더 우수하다. | |
OLED 기술은 누가 개발하였나? | OLED 기술은 1987년 Tang과 VanSlyke에 의해 최초로 개발된 이후 많은 발전을 이루어 현재는 모바일 및 TV에 상용화되었다. OLED는 기존의 LCD와 달리 자발광이라는 특징 때문에 백라이트가 필요 없고 시인성이 좋으며 응답속도가 빠르고 시야각이 넓은 장점을 지닌다. | |
열 활성 지연형광 소재는 OLED의 어떤 점을 해결하기 위해 연구되는 중인가? | 현재 OLED에서 적색과 녹색 발광 소재는 효율 및 수명이 뛰어난 인광 소재를 사용하는 반면, 청색은 효율이 낮은 형광 소재를 사용하기 때문에 전력 소모가 크다. 이를 극복하기 위해 최근 열 활성 지연형광 (thermally activated delayed fluorescence, TADF) 소재가 활발히 연구되고 있다. |
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