Increasing p-type dye sensitised solar cell photovoltages using polyoxometalates

Hani El Moll, Fiona A. Black, Christopher J Wood, Ahmed Al-Yasari, Anil Reddy Marri, Igor V. Sazanovich, Elizabeth A. Gibson, John Fielden

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Abstract

Lindqvist polyoxometalate (POM) additives increase VOC in p-type DSSCs by up to 140%, yielding substantial efficiency gains for poorly matched dyes and redox mediators. For better dye/electrolyte combinations, these gains are typically outweighed by losses in JSC. Charge lifetime and transient IR measurements show that this is due to retardation of both recombination and electron transfer to the mediator, and a positive shift in the NiO valence band edge. The POMs also show their own, limited sensitizing effect.
Original languageEnglish
Pages (from-to)18831-18835
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume19
Early online date3 Jul 2017
DOIs
Publication statusPublished - Jul 2017

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