| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-디스플레이 |
| 제목 | Interface engineering of efficient perovskite light emitting diodes |
| 초록 | It is important to arrange energybandgaps of the device, considering HOMO and LUMO values of the materials.Although Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine](PTAA) is commonly usedfor light emitting diodes and solar cells, it has a bit high HOMO value(-5.2eV) to use LEDs with inorganic perovskites. Here, it is necessary toadjust the band alignment through interface layer engineering. If the HOMO ofthe perovskite layer has a value lower than PTAA, the hole is not blocked andit is easy to move onto the hole injection layer (HIL). As a result, the Electron-holebalance can be more effective through designing energy band of the quantum wellstructure by laying 2D material on the interface. This structure blocks thehole-extracting and helps the excitons formed well with stronger bindingenergy. It can be expected to improve optical properties of PeLEDs. |
| 저자 | 김유진, 허진혁, 임상혁 |
| 소속 | 고려대 |
| 키워드 | perovskite; LED |
