| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Emission wavelength control of light-emitting diode based on mixed halide perovskite nanocrystals via additive treatment |
| 초록 | All inorganic cesium lead halide perovskite quantum dots have gained attraction due to its excellent optical properties and relatively high thermal stability. It has high exciton binding energy, very narrow of photoluminescence emission and thermally decompose at moderate temperature around 800K also. These luminescent and extraordinary properties make them as very promising material for the next-generation lighting and commercial display market. However, especially fabricating blue emitting quantum dots based light-emitting diode, there are only few study about the blue emitting perovskite nanocrystal synthesis and also fabricating blue emitting diode while using those nanocrystals as emissive layer material directly. While application toward white LED, the study of fabricating 3-colored bright and efficient light emitting diode is essential. To circumvent these problems, in this study, we have investigated new synthetic way to tune emissive wavelength of cesium lead halide perovskite nanocrystal via simple vapor chemical treatment. We will present the structural, optical properties, and electrical properties of the fabricated light emitting diode with synthesized quantum dots based on transmission electron microscope, UV-visible absorption spectroscopy, and electroluminescence spectra of the perovskite quantum dots. Acknowledgement This study was supported by the Advanced Research Project funded by the SeoulTech (Seoul National University of Science and Technology). |
| 저자 | Seung-Beom Cho1, Ho-Young Kim2, Seung-Gyun Moon1, Il-kyu Park2 |
| 소속 | 1Department of Materials Science and Engineering, 2Seoul National Univ. of Science and Technology |
| 키워드 | Perovskite; Quantum-Dots; QLED; Color tuning; Fully-Inorganic |
