| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
디스플레이_포스터 |
| 제목 |
Quasi-2D Ruddlesden-Popper Perovskite Light-Emitters with Br-based Mixed Spacers. |
| 초록 |
Recently, perovskite LED has been attracting attention as a next-generation LED. However, MLH perovskite is not applicable to LED devices due to its low moisture stability. (PEA)2(MA)n-1PbnBr3n+1 has been reported to enhance the photoluminescence (PL) and humid-stability compared to MLH 3D perovskite (MAPbBr3). However, the development of ruddlesden-popper phase perovskites has been only focused on green emission region. In this regard, herein we tried to tailor the emission range of Br-based quasi-2D perovskite from green to blue region by integrating organic cation spacer. As a result, the PL intensities and the emission wavelength of quasi-2D perovskites, showed emissions at blue regions. Based on our dimensionality-controlled perovskites, we demonstrated blue-region LED devices. The protocol and strategy established in this study can be exploited to enhance high level external quantum efficiency and luminance. |
| 저자 |
이일금1, 임주원1, Li Na Quan2, Edward H. Sargent3, 김동하1
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| 소속 |
1이화여자대, 2Univ. of California, 3Univ. of Toronto |
| 키워드 |
perovskite LED |
| E-Mail |
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