| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Boosting Optoelectronic Properties in Mixed 2D/3D Metal Halide Perovskite Films for Light-Emitting Diodes |
| 초록 |
Although numerous successful empirical results have been obtained for mixed two-dimensional (2D)/three-dimensional (3D) perovskite films, the nature of charge carriers in correlation with the crystallographic properties and composition of the films remains elusive. Herein, we investigated the nature of charge carriers and its impact on the luminescence and transport behaviors in a mixed 2D/3D perovskite system containing 2D butylammonium lead bromide (BA2PbBr4) and 3D formamidinium lead bromide (FAPbBr3). Ultrafast transient absorption and temperature-dependent photoluminescence measurements revealed distinct changes in both the electron–hole and electron–phonon coupling behaviors, which critically determined nonemissive decay processes of the excited states, including the hot carriers. These behaviors could then be closely correlated with the crystallographic evolution of the perovskite films. |
| 저자 |
권용현1, 조정호1, 허예진1, 조새벽2, 호동해1, 명재민1, 이진욱2
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| 소속 |
1연세대, 2성균관대 |
| 키워드 |
2D/3D perovskite; metal halide perovskite; LED
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| E-Mail |
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