| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-나노 |
| 제목 | HalidePerovskite Single Crystals for Optoelectronic Applications |
| 초록 | Halide perovskite single crystalshave been recognized as a promising platform for the high-performanceoptoelectronic devices, featuring high crystallinity and stability. However, ahigh trap density and structural non-uniformity at the surface have been majorbarriers for the progress of single crystal-based optoelectronic devices. Here,we report the formation of a unique nano-island structure at the surface of thefacet-controlled cuboid MAPbI3 (MA =CH3NH3+) single crystals through a cation inter-diffusion process enabledby energetically vaporized CsI. This newly reconstructed nano-islandsurface enhances the light absorbance over 50% and increases the charge carriermobility from 56 to 93 cm2V-1s-1.Thisunique engineering of the single crystal surface provides a pathway towardsdeveloping high-quality perovskite single crystal surface for optoelectronicapplications. |
| 저자 | 윤정호1, 윤재성2, 임종철3, 오종민1, 박영구4 |
| 소속 | 1경희대, 2Univ. of Surrey, 3충남대, 4강원대 |
| 키워드 | Halide perovskites; Single Crystal; Optoelectronic; Defect Engineering; Thermal Evaporation |
