| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Highly Efficient and Mechanically & Chemically Stable Flexible Planar Perovskite Solar Cells by Introducing Electron Transport Layer of Novel NDI-Based Polymer |
| 초록 |
We replaced conventional [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) with newly synthesized P(NDI2DT-TTCN) for new electron transport layer (ETL) in inverted planar flexible planar perovskite solar cells. P(NDI2DT-TTCN) consists of alternating copolymer of naphthalene diimide (NDI) and dicyanoterthiophene, which has strong electron-withdrawing backbone and electron-accepting unit. P(NDI2DT-TTCN) based ETL has excellent electron transport property and facilitates uniform coverage of perovskite layer, which leads less current leakages and better charge extractions. Moreover, hydrophobic property and intramolecular interactions of P(NDI2DT-TTCN) make more chemically and mechanically stable flexible planar perovskite solar cells. With these enhanced functionalities, the device efficiency significantly increased to 17% compared to PCBM-based devices (14.3%) with negligible hysteresis. Also it showed excellent mechanical stability of 74% maintaining efficiency after 500 bending cycles. |
| 저자 |
김도현, 김홍일, 최경원, 정다솔, 최예림, 민지현, 박태호
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| 소속 |
POSTECH |
| 키워드 |
Flexible perovskite solar cell; N-type semiconducting polymer; Electron transport layer; NDI-based polymer
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| E-Mail |
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