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Woronowicz, Kamil & Ahmed, Saquib & Biradar, Archana A. & Biradar, Ankush V. & Birnie, Dunbar P. & Asefa, Tewodros & Niederman, Robert A. (2012). Near-IR absorbing solar cell sensitized with bacterial photosynthetic membranes. Photochemistry and Photobiology, 88, 1467-1472. Retrieved from https://doi.org/doi:10.7282/T3862DMF

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Near-IR absorbing solar cell sensitized with bacterial photosynthetic membranes (2010)
Kamil Woronowicz, Saquib Ahmed, Archana A. Biradar, Ankush V. Biradar, Dunbar P. Birnie, Tewodros Asefa, Robert A. Niederman
Photochemistry and Photobiology 88: 1467-1472.
Link to published version
VersionAccepted Manuscript (AM)
AbstractCurrent interest in natural photosynthesis as a blueprint for solar energy conversion has led to the development of a biohybrid photovoltaic cell in which bacterial photosynthetic membrane vesicles (chromatophores) have been adsorbed to a gold electrode surface in conjunction with biological electrolytes (quinone [Q] and cytochrome c; Magis et al. [2010] Biochim. Biophys. Acta 1798, 637–645). Since light-driven current generation was dependent on an open circuit potential, we have tested whether this external potential could be replaced in an appropriately designed dye-sensitized solar cell (DSSC). Herein, we show that a DSSC system in which the organic light-harvesting dye is replaced by robust chromatophores from Rhodospirillum rubrum, together with Q and cytochrome c as electrolytes, provides band energies between consecutive interfaces that facilitate a unidirectional flow of electrons. Solar I–V testing revealed a relatively high Isc (shortcircuit current) of 25 lA cm)2 and the cell was capable of generating a current utilizing abundant near-IR photons (maximum at ca 880 nm) with greater than eight-fold higher energy conversion efficiency than white light. These studies represent a powerful demonstration of the photoexcitation properties of a biological system in a closed solid-state device and its successful implementation in a functioning solar cell.
Persistent URLhttps://doi.org/doi:10.7282/T3862DMF
SubjectsSolar cells, Dye-sensitized solar cells, Photosynthesis
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