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Tris(2-(1 H-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
Open accessAbstract
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.
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Metadata
- Authors
- Burschka, J., Dualeh, A., Kessler, F., Baranoff, E., Cevey-Ha, N.-L., Yi, C., Nazeeruddin, M. K., & Grätzel, M.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-10-25
- Volume
- 133
- Issue
- 45
- Pages
- 18042-18045
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1965921951
- Cited by
- 761
- References
- 0
- FWCI
- 26.93
- Type
- journal article
- Language
- en
- Open access
- green
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