Abstract

Chemical doping is an important strategy to alter the charge-transport properties of both molecular and polymeric organic semiconductors that find widespread application in organic electronic devices. We report on the use of a new class of Co(III) complexes as p-type dopants for triarylamine-based hole conductors such as spiro-MeOTAD and their application in solid-state dye-sensitized solar cells (ssDSCs). We show that the proposed compounds fulfill the requirements for this application and that the discussed strategy is promising for tuning the conductivity of spiro-MeOTAD in ssDSCs, without having to rely on the commonly employed photo-doping. By using a recently developed high molar extinction coefficient organic D-π-A sensitizer and p-doped spiro-MeOTAD as hole conductor, we achieved a record power conversion efficiency of 7.2%, measured under standard solar conditions (AM1.5G, 100 mW cm(-2)). We expect these promising new dopants to find widespread applications in organic electronics in general and photovoltaics in particular.

Keywords

ChemistryDopantTrisPyridineCobaltSolid-stateDye-sensitized solar cellSemiconductorDopingInorganic chemistryOrganic chemistryPhysical chemistryOptoelectronics

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Publication Info

Year
2011
Type
article
Volume
133
Issue
45
Pages
18042-18045
Citations
746
Access
Closed

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Cite This

Julian Burschka, Amalie Dualeh, Florian Keßler et al. (2011). Tris(2-(1<i>H</i>-pyrazol-1-yl)pyridine)cobalt(III) as p-Type Dopant for Organic Semiconductors and Its Application in Highly Efficient Solid-State Dye-Sensitized Solar Cells. Journal of the American Chemical Society , 133 (45) , 18042-18045. https://doi.org/10.1021/ja207367t

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DOI
10.1021/ja207367t