| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
F. 광기능/디스플레이 재료 분과 |
| 제목 |
Large-scale synthesis and surface modification of pure green luminescent materials for next-generation display technology |
| 초록 |
Recently, the high color purity luminescence materials have attained great attention as the wide color gamut (WCG) of the white LEDs is an important issue to generate more realistic color in displays. Therefore, a number of researches are highly focused on developing halide perovskites due to their outstanding optical properties. In this study, we report the room-temperature large-scale synthesis of CsPbBr3/Cs4PbBr6 green-emitting materials with 22.4 nm of narrow emission spectrum centered at 519 nm and the the u'v' color coordinates (0.0342, 0.5773). Perovskites were synthesized via the ligand-assisted reprecipitation method. In addition, the high shear mixer was introduced to reduce the reaction time and scale-up. Through this continuous method, we improved the synthesis scale compared with the stirring method and obtained perovskite solids within 30 min. In addition, the surface of the CsPbBr3/Cs4PbBr6 luminescence material was modified with a silane coupling agent by the plasma-assisted method. The stability in moisture was improved by the hydrophobic properties imparted to the surface. Consequently, the surface-modified perovskite showed a 20% improvement in the degradation of the photoluminescence property against moisture. We expect that this research will be useful in realizing the WCG of the next-generation display. |
| 저자 |
Seung Hee Choi, Young Hyun Song, Bo Young Kim, Ji Hye Kim, Yun-Chul Lee
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| 소속 |
Korea Photonics Technology Institute (KOPTI) |
| 키워드 |
green-emitting; white LED; display; mass production
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| E-Mail |
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