La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Quantitative Evaluation of Electron Injection Efficiency in Dye-Sensitized TiO(2) Films
Auteurs :	Ryuzi Katoh, Auteur
Type de document :	Article
Dans :	AMBIO (41(3) MAR 2012)
Article en page(s) :	143-148
Langues:	Anglais
Résumé :	The efficiency of electron injection (Phi(inj)) in dye-sensitized nanocrystalline films was studied through transient absorption (TA) and time-resolved microwave conductivity (TRMC) measurements. Here, I show the absolute value of Phi(inj) for several dye-sensitized nanocrystalline films and discuss the relationship between Phi(inj) and the free energy change (-Delta G(inj)) for the injection process. Some systems exhibited lower Phi(inj) values even when -Delta G(inj) was sufficiently large to promote electron injection. Recent experimental findings are used to propose possible explanations for this phenomenon. Quantitative evaluation of Phi(inj) using TA and TRMC will give us new insights for developing high-performance solar cell devices.

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