화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO))
권호 22권 1호
발표분야 (무기재료) 무기 발광 소재 및 소자
제목 Highly efficient perovskite based light-emitting diodes by defect passivation
초록 The organic-inorganic hybrid perovskite materials are attracting an interest because of their outstanding characteristics that enable a remarkable enhancement of device efficiency for light-emitting diodes (LEDs) and solar cells. High-quality perovskite films are necessary for highly efficient and stable perovskite devices. However, solution-processed perovskite films inevitably contain defect sites such as voids, pinholes, grain boundaries and under-coordinated ions, creating a large number of undesired electronic trap sites. Here, we investigate the significant beneficial effects using a new treatment based on amine-based passivating materials (APMs) and proper hole transport layer to passivate and control the defect sites, resulting in improved efficiency and long-term stability of perovskite light-emitting diodes (PeLEDs).
저자 송명훈, 이승진, 박종현, 유재철, 정의대
소속 울산과학기술원
키워드 Perovskite; LEDs; Defect Passivation
E-Mail mhsong@unist.ac.kr