| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
대학원생 구두발표(발표10분) |
| 제목 |
Enhanced π-Conjugation for High Current Density in Naphtho[2,1-b:3,4-b']dithiophene-Based Conjugated Polymers for Organic Solar Cells |
| 초록 |
Two novel polymeric semiconductor materials based on naphtho[2,1-b:3,4-b']dithiophene (NDT), PNDT-TTT and PNDT-TET, have been synthesized and tested in bulk heterojunction (BHJ) solar cells. PNDT-TTT contains tri-thiophene units and PNDT-TET contains bi-thiophene units coupled by ethylenic linkages; when compared to PNDT-T, which contains single thiophene units, these polymers exhibit red-shifted absorption spectra, enhanced conjugation lengths, and improved coplanarity because of their higher electron density. These effects result in high short circuit currents (JSC) and fill factors (FF) in organic solar cells. The PNDT-TET- and PNDT-TTT-based devices exhibit considerably better photovoltaic performances, with power conversion efficiencies (PCEs) of 3.5% and 3.3% respectively, than the PNDT-T-based device (1.3%). |
| 저자 |
김유진1, 이윤지2, 장재완2, 차효정1, 김윤희2, 권순기2, 박찬언1
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| 소속 |
1포항공과대, 2경상대 |
| 키워드 |
Organic solar cells; Bulk heterojunction solar cells; NDT derivatives; Conjugated polymers; Extended conjugation length
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| E-Mail |
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