Efficiency of Electron Injection in Dye-Sensitized Semiconductor Films

Abstract:

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The efficiency of electron injection (inj) in dye-sensitized nanocrystalline films has been studied by means of transient absorption spectroscopy. We observed inj of nearly unity for N3 dye adsorbed on nanocrystalline TiO2 films (N3/TiO2). We examined the effects of various experimental conditions, such as light intensity, excitation wavelength, and presence of additives (4-tert- butylpyridine, tBP and Li ions), on inj. We also used various semiconductors and sensitizer dyes to study the effect of free energy change (G) on inj. These results give us new insights for developing high-performance solar cell devices.

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Periodical:

Edited by:

Hong Lin

Pages:

79-95

DOI:

10.4028/www.scientific.net/KEM.451.79

Citation:

R. Katoh and A. Furube, "Efficiency of Electron Injection in Dye-Sensitized Semiconductor Films", Key Engineering Materials, Vol. 451, pp. 79-95, 2011

Online since:

November 2010

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$35.00

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