Femtosecond electron-transfer dynamics at a sensitizing dye-semiconductor (TiO2) interface

被引：387

作者：

Rehm, JM

McLendon, GL

Nagasawa, Y

Yoshihara, K

Moser, J

Gratzel, M

机构：

[1] PRINCETON UNIV,DEPT CHEM,PRINCETON,NJ 08544

[2] UNIV ROCHESTER,DEPT CHEM,ROCHESTER,NY 14627

[3] GRAD UNIV ADV STUDIES,MYODAIJI,OKAZAKI 444,JAPAN

[4] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN

[5] ECOLE POLYTECH FED LAUSANNE,INST CHIM PHYS,CH-1015 LAUSANNE,SWITZERLAND

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 23期

关键词：

D O I：

10.1021/jp960155m

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The charge injection dynamics of dye sensitization from a surface-bound dye (coumarin 343 (C343)) to the conduction band (CB) of the TiO2 is reported here for the first time. Ultrafast fluorescence dynamics demonstrate that the charge injection from the C343 dye to the CB of the TiO2 occurs on a time scale of ca. 200 fs. The charge injection efficiency is attributed to strong electronic coupling between the dye and TiO2 energy levels. The results yield a rate of injection of 5 x 10(12) s(-1).

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页码：9577 / 9578

页数：2

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