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Article Dans Une Revue ACS Applied Energy Materials Année : 2020

Dye-Sensitized Photocathodes: Boosting Photoelectrochemical Performances with Polyoxometalate Electron Transfer Mediators

Résumé

The amplification effect of polyoxometalates (POMs) on the efficiency of dye-sensitized nano-ITO cathodes is disclosed. The use of hybrid polyoxometalates of the type [PW11O39{SnC6H4 C6H4F}](4-), F standing for a carboxylic group (POM-COOH) or a diazonium unit, allows control of the loading of the POMs on the electrode and investigation of key parameters. Even at very low loading, POM-COON has a substantial effect on the photocurrent response with up to 25-fold increase. Besides ensuring the stability toward leaching, the anchoring function of the POM hybrids was also found to play an intricate role in the competition between the multiple events involved.

Domaines

Chimie Matériaux
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Dates et versions

hal-02491994 , version 1 (02-03-2020)

Identifiants

Citer

Youssef Ben M'Barek, Timothy Rosser, Jérémy Sum, Sébastien Blanchard, Florence Volatron, et al.. Dye-Sensitized Photocathodes: Boosting Photoelectrochemical Performances with Polyoxometalate Electron Transfer Mediators. ACS Applied Energy Materials, 2020, 3 (1), pp.163-169. ⟨10.1021/acsaem.9b02083⟩. ⟨hal-02491994⟩
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