| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole-based Small Molecules for Dopant-free and Efficient Hole Transporting Layer for High Performance Perovskite Solar Cells |
| 초록 |
The development of hole-transporting materials (HTMs) for perovskite solar cells (PSCs) are highly important to increase the efficiency and stability of the devices. Current state-of-the-art HTMs based-on spirobifluorene require a doping process which is environmentally harmful and reducing the stability of the devices. In this work, we synthesized di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole (DBTP) based dopant-free HTMs. The synthesized HTMs showed higher hole mobility and interfacial charge transfer rates than the doped spiro-OMeTAD. As a result, the DBTP-HTMs-based PSCs showed better power conversion efficiency of 18.09% without any dopant process than the PSCs using doped spiro-OMeTAD (17.82%). Notably, the hydrophobic nature of our dopant-free DBTP-HTMs afforded excellent air-storage stability of L-PSCs (81% retention after 33 days), whereas the doped spiro-OMeTAD based PSCs rapidly degraded under identical conditions (＜1% retention after 33 days). |
| 저자 |
강진현, Randi Azmi, 김준호, 정문기, 장성연, 정인환
|
| 소속 |
국민대 |
| 키워드 |
Perovskite; dopant free hole transfer materials
|
| E-Mail |
|
