화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO))
권호 45권 1호
발표분야 기능성 고분자
제목 A highly elastic and stretchable polymer gel for quantum dots-based light emitters
초록 Owing to the poor mechanical reliability of the solid matrices, little progress has been made in developing stretchable down-conversion white light-emitting diodes (WLEDs). In this work, we propose a novel strategy for fabricating flexible and stretchable down-conversion WLEDs based on six-color quantum dots (QDs)-incorporated gel matrix. Transparent and stretchable gels with large pores were created by binary-solvent-based gelation of polyvinyl alcohol (PVA) at low temperatures. Importantly, both of the QDs and the gel were created in the same two solvents, which made the QDs compatible with the gelation process. The QDs were incorporated into the gel without any properties’ degradation. Namely, the optical properties of the QDs in the liquid phase were retained in the gel phase. The QD gel (QDG) exhibited elastic deformation up to 200%, with uniform luminescence. In addition, the performance of the QDG-based WLED remained unchanged after more than 1000 bending/stretching cycles.
저자 이운한, 조혜미, 윤현석
소속 전남대
키워드 quantum dots; gels; physical cross-linking; white light-emitting diodes
E-Mail hyoon@chonnam.ac.kr