| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
무기재료_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 that can replace existing OLED and QLED. However, methylammonium lead halide (MLH) perovskite is not applicable to LED devices due to its low moisture stability. Quasi-2D perovskites (PEA)2(MA)n-1PbnBr3n+1 has been reported to enhance the photoluminescence (PL) and humid-stability compared to conventional MLH 3D perovskite. However, the development of conventional 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 the candidates for spacer, aromatic and aliphatic cations were employed by controlling the relative concentration ratio. As a result, the PL intensities and the emission wavelength showed emissions at blue regions. Based on our new-class of layered perovskites, we demonstrated blue-region LED devices.. |
| 저자 |
이일금1, 임주원2, 전리나3, Edward H. Sargent4, 김동하1
|
| 소속 |
1이화여자대, 2Univ. of Michigan, 3Univ. of California Berkeley, 4Univ. of Toronto |
| 키워드 |
perovskite LED; Quasi-2D perovskite
|
| E-Mail |
|
