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Brabec, C. J.; Sariciftci, N. S.; Hummelen, J. C.
Advanced functional materials, 02/2001, Letnik: 11, Številka: 1Journal Article
Recent developments in conjugated‐polymer‐based photovoltaic elements are reviewed. The photophysics of such photoactive devices is based on the photo‐induced charge transfer from donor‐type semiconducting conjugated polymers to acceptor‐type conjugated polymers or acceptor molecules such as Buckminsterfullerene, C60. This photo‐induced charge transfer is reversible, ultrafast (within 100 fs) with a quantum efficiency approaching unity, and the charge‐separated state is metastable (up to milliseconds at 80 K). Being similar to the first steps in natural photosynthesis, this photo‐induced electron transfer leads to a number of potentially interesting applications, which include sensitization of the photoconductivity and photovoltaic phenomena. Examples of photovoltaic architectures are presented and their potential in terrestrial solar energy conversion discussed. Recent progress in the realization of improved photovoltaic elements with 3 % power conversion efficiency is reported. Recent developments in conjugated‐polymer‐based photovoltaic elements are reviewed here and an introduction to the underlying photophysics is given. Examples of photovoltaic architectures are presented and their potential in terrestrial solar energy conversion is discussed. The Figure shows a large‐area plastic solar cell running a small motor. (See also inside front cover.)
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in: SICRIS
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