| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-디스플레이 |
| 제목 | Enhanced stability of perovskite quantum dots through TiO2capping |
| 초록 | Halide perovskite is emerging as highlyattractive semiconductors for use in optoelectronics. Especially, perovskitequantum dots(QDs) are candidate for next-generation of light-emitting diode(LED) due to high color purity, low non-radiative recombination rates, andtunable bandgap. However, perovskite QDs have difficult to commercializingowing to roll-off phenomenon, which was caused by narrow emission distribution,low adsorbed organic ligands. Here, to overcome these challenging, wefabricated TiO2-capped perovskite QDs thin film by UV treatment. TiO2are capped the same ligands, oleic acid (OA), as perovskite QDs, which are easyto remove through UV-light. Furthermore, TiO2 not only can act as ligandsbut retard QDs aggregation. Thus, this method is expected to reduce roll-offphenomenon in device. To investigate TiO2-capped perovskite QDs,crystal structure and film surface were analyzed by TEM and SEM and film stabilitywas measured by PL and PLQY. |
| 저자 | 유용석1, 박희정1, 조우섬1, 이성구1, 성영은2, 배승환1 |
| 소속 | 1한국생산기술(연), 2IBS / 서울대 |
| 키워드 | perovskite; QDs; stability; TiO2; nonacrystal; LED |
