| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Cyanoacetic Acid Anchoring Group Tethered Thiophene for Well-Matched LUMO Level in Ru(II)-Terpyridine Dye Sensitized Solar Cells |
| 초록 |
A strong electron donating thiophene moiety tethered between pyridyl and cyanoacetic acid group of the terpyridine ligand based Ru sensitizers, referred as SY-01 and SY-02 with well-matched LUMO level as that of the black dye (N749) have been synthesized. The excited-state oxidation potentials E°ox* ranging from -0.98 to -0.96 V as revealed from the electrochemical studies, are sufficiently more negative than the conduction band edge of the TiO2 electrode (ca. -0.5 V) facilitating the effective electron injection into TiO2 from excited state of the dyes. The increased conjugation conferred to the SY-01 and SY-02 dyes through π-expansion by tethering of the ED thiophene moiety increases both their light-harvesting and photovoltaic energy conversion capability in comparison with N3 and N749 dyes. The increased VOC values for SY-01 and SY-02 compared with that of N749 are well consistent with long life times measured from the electrochemical impedance spectroscopy. |
| 저자 |
빈센트1, 사미2, 김진곤3
|
| 소속 |
1포항공과대, 2advanced nano product, 3포항공대 |
| 키워드 |
synthesis; ruthenium complexes; solar cell
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| E-Mail |
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