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Alkyl-Functionalized Organic Dyes for Efficient Molecular Photovoltaics
Abstract
We designed and synthesized new alkyl-functionalized organic dyes, MK-1 and MK-2, for dye-sensitized solar cells (DSSCs). Based on the MK-2 dye, a high performance of efficiency (eta, 7.7%; short-circuit current density Jsc = 14.0 mA cm-2, open-circuit voltage Voc = 0.74 V, and fill factor FF = 0.74) was achieved under AM 1.5 G irradiation (100 mW cm-2). Remarkably, the relatively higher Voc for DSSCs based on MK-1 and MK-2 dyes, which have long alkyl chains, were observed among the organic dyes caused by the increasing of the electron lifetime in the conduction band of TiO2. Our molecular design of alkyl-functionalized dyes strongly suggests the promising performance of molecular photovoltaics based on organic dyes.
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Metadata
- Authors
- Koumura, N., Wang, Z.-S., Mori, S., Miyashita, M., Suzuki, E., & Hara, K.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-10-18
- Volume
- 128
- Issue
- 44
- Pages
- 14256-14257
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2042674493
- Cited by
- 878
- References
- 1
- FWCI
- 27.11
- Type
- journal article
- Language
- en
- Open access
- closed
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