| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Importance of Electron Transport Ability in Naphthalene Diimide-Based Polymer Acceptors for High-Performance, Additive-Free, All-Polymer Solar Cells |
| 초록 |
We report a systematic investigation of the correlations between the electron mobility of polymer acceptors and the photovoltaic performances of all-PSCs by using a series of naphthalene diimide (NDI)-based polymer acceptors. To control the planarity of the polymer backbone and enhance electron mobility, we introduce three different electron-rich units into the NDI-based polymers. Particularly, P(NDI2OD−TVT) polymers exhibit the highest electron mobility (2.31 cm2 V−1 s−1) in organic field-effect transistors owing to various factors including enhanced degree of coplanarity, strong intermolecular interactions and facilitate three-dimensional (3-D) charge transport. In addition, the superb electron transport capability of P(NDI2OD−TVT) leads to a well-balanced hole/electron mobility ratio in all-PSC blends. Thus, all-PSCs based on the P(NDI2OD−TVT) acceptor exhibit a high power conversion efficiency of 4.25% without any solvent additives or thermal treatments. |
| 저자 |
김범준1, 오준학2, 김영웅1, 송인호2, 강현범1, 이창연1, 유호정2, 김기현1, 최준형1
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| 소속 |
1KAIST, 2POSTECH |
| 키워드 |
all polymer solar cells; electron mobility; additive-free; polymer acceptor; naphthalene diimide;
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| E-Mail |
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