| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Effect of an in situ-generated ionic layer of I- species at TiO2 surfaces on fast cascade neutralization of an oxidized sensitizer |
| 초록 |
We accelerate the rate of sensitizer neutralization on nanocrystalline TiO2 electrode surfaces using 3,4,5-tris-butenyloxy benzoic acid. 1H NMR and contact angle measurements revealed that the terminal double bonds reacted with I2 to form an ionic layer of I- species. Transient absorption spectroscopy and electrochemical impedance spectroscopy studies demonstrated that I- species neighboring the cationic dye molecules (D+) accelerate the neutralization rate (kD+), as well as decrease the recombination reactions of photoinduced electrons with D+ (k1) and I3- (k2). Dye-sensitized solar cells treated with TD exhibit a power conversion efficiency of 10.2% |
| 저자 |
김태완, 임종철, 박태호
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| 소속 |
POSTECH |
| 키워드 |
ionic layer; neutralization
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| E-Mail |
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