| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Enhancing Performance and Stability of Tin Halide Perovskite Light Emitting Diodes via Coordination Engineering of Lewis Acid-Base Adducts |
| 초록 |
For resolving toxicity issues of Pb-based perovskites, Sn-based perovskites have been widely studied as a promising alternative due to similar valence electron configuration between Sn2+ and Pb2+. However, desired Sn2+ in the precursor solution and film is easily oxidized to Sn4+, causing detrimental Sn vacancies and impurities in the films. Herein, N,N′-dimethylpropyleneurea (DMPU) is proposed as an alternative Lewis base for the fabrication of high-quality Sn-based perovskite thin films. The strongly coordinating Lewis base DMPU is shown to suppress the oxidation of Sn2+ in the precursor solution while promoting growth of uniform and highly crystalline thin films. The PEA2SnI4 perovskite light emitting diode (PeLED) based on DMPU demonstrates dramatically improves luminance. The optimum PeLED based on DMPU achieves a maximum luminance and external quantum efficiency of 68.84 cd m−2 and 0.361%, respectively. |
| 저자 |
김선권1, 허예진1, 장호진2, 이주홍2, 조새벽2, 호동해1, 권석준2, 김규선2, 전일2, 명재민1, 조정호1
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| 소속 |
1연세대, 2성균관대 |
| 키워드 |
perovskite LED; lead free perovskite; tin perovskite; PeLED
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| E-Mail |
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