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Photoelectrochemical properties of donor-acceptor nanocomposite films composed of porphyrin-functionalized cup-shaped nanocarbon materials

Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan

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and

Shunichi Fukuzumi

Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan

Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea

Corresponding author, tel: +81-6-6879-7368, fax: +81-6-6879-7370.

SPP full member in good standing.

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https://doi.org/10.1142/S1088424610002264Cited by:4 (Source: Crossref)

Abstract

Porphyrin-functionalized cup-shaped nanocarbons (CNC-H₂P) have been assembled onto nanostructured SnO₂ films using an electrophoretic deposition method to examine the photoelectrochemical properties. The obtained CNC-H₂P nanohybrid films were examined by a series of steady-state and time-resolved spectroscopic measurements and photoelectrochemical measurements. The resulting nanohybrid film afforded drastic enhancement in the photoelectrochemical performance as well as broader photoresponse in the visible region as compared with the reference CNC system without porphyrins. The enhancement of photocurrent generation may be caused by the efficient electron injection from the long-lived charge-separated state of CNC-H₂P upon photoexcitation. This feature makes cup-shaped nanocarbon materials a useful candidate for developing efficient photoelectrochemical and photovoltaic cells.

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