| 학회 |
한국고분자학회 |
| 학술대회 |
2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 |
30권 1호, p.472 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
A Low Bandgap Polymer Consisting of Alternating thiophene and benzothiadiazole as a Donor-Acceptor moiety for Plastic Solar Cells |
| 초록 |
Encouraging progress has been made over the last few years in the field of photovoltaic solar cells based on organic molecules and conjugated polymers. Among the different concepts which have been proposed, the bulk heterojunction approach is attractive and significant progress in improving the power conversion efficiency of the plastic solar cells. Although organic materials especially conjugated polymers have several advantages such as low cost synthesis and comparatively easy manufacture of thin film devices by solution cast technologies, the power conversion efficiency is relatively poor. One of the possible improvements of efficiency is the implementation of new materials absorbing the part of the solar spectrum which has a maximum photon flux (around 1.8 eV). For efficient harvesting of the solar energy, we synthesized a novel low band-gap conjugated polymer (R4-PTBT) consisting of alternating electron-rich diheptyl-substituted propylene dioxythiophene(R4-T) and electron-deficient 2,1,3-benzothiadiazole(B) units. This material shows a quite low optical bandgap of 1.55 eV. We investigated its optical and electrochemical properties and photovoltaic properties by fabricating heterojunction solar cells with PCBM as an electron acceptor. |
| 저자 |
김미경1, 정환희1, 신원석1, 진성호1, 김미라1, 이진국1, 제갈영순2
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| 소속 |
1부산대, 2경일대 |
| 키워드 |
low bandgap; heterojunction solar cells
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| E-Mail |
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