| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Structure-Property Relationship: A Comparison of Charge Carrier dynamics and Recombination in All-Polymer Photovoltaics |
| 초록 |
We report a comparison of charge carrier kinetics and recombination dynamics correlated with the device performances of PBDTTT-C and PBDTTT-CT in non-fullerene P(NDI2OD-T2) solar cells. The nanoscale morphological characteristics are found to be remarkably different for these two polymers in all-polymer bulk heterojunction (BHJ) blends. Important insights into the carrier dynamics and crystalline packing features of these different donor materials are provided in detail. The higher device performance of the PBDTTT-CT:P(NDI2OD-T2) device (2.78% compared to 1.56% for the PBDTTT-C:P(NDI2OD-T2) cell) is shown to result from efficient charge generation and faster carrier separation, reducing non-geminate recombination during charge collection, which is attributed to the perfect intermixing between the donor and acceptor polymer networks. |
| 저자 |
김유진1, 장웅식2, 왕동환3, 박찬언1
|
| 소속 |
1포항공과대, 2중아대, 3중앙대 |
| 키워드 |
All-polymer solar cell; Polymer/polymer blend; Molecular structure; Charge carrier kinetics; Recombination dynamics
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| E-Mail |
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