By a News Reporter-Staff News Editor at Energy Weekly News -- Research findings on Fullerenes are discussed in a new report. According to news reporting out of Seattle, Washington, by VerticalNews editors, research stated, "A plethora of solution-processed materials have been developed for solar cell applications. Hybrid solar cells based on light absorbing semiconducting polymers infiltrated into mesoporous TiO2 are an interesting concept, but generating charge at the polymermetal oxide heterojunction is challenging."
Our news journalists obtained a quote from the research from the University of Washington, "Metalorganic perovskite absorbers have recently shown remarkable efficiencies but currently lack the range of color tunability of organics. Here, we have combined a fullerene self-assembled monolayer (C(60)SAM) functionalized mesoporous titania, a perovskite absorber (CH3NH3PbI3xClx), and a light absorbing polymer hole-conductor, P3HT, to realize a 6.7% efficient hybrid solar cell. We find that photoexcitations in both the perovskite and the polymer undergo very efficient electron transfer to the C(60)SAM. The C(60)SAM acts as an electron acceptor but inhibits further electron transfer into the TiO2 mesostructure due to energy level misalignment and poor electronic coupling. Thermalized electrons from the C(60)SAM are then transported through the perovskite phase. This strategy allows a reduction of energy loss, while still employing a mesoporous electron acceptor, representing an exciting and versatile route forward for hybrid photovoltaics incorporating light-absorbing polymers."
According to the news editors, the research concluded: "Finally, we show that we can use the C(60)SAM functionalization of mesoporous TiO2 to achieve an 11.7% perovskite-sensitized solar cell using Spiro-OMeTAD as a transparent hole transporter."
For more information on this research see: High-Performance Perovskite-Polymer Hybrid Solar Cells via Electronic Coupling with Fullerene Monolayers. Nano Letters, 2013;13(7):3124-3128. Nano Letters can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Nano Letters - www.pubs.acs.org/journal/nalefd)
Our news journalists report that additional information may be obtained by contacting A. Abrusci, University of Washington, Dept. of Mat Sci & Engn, Seattle, WA 98195, United States. Additional authors for this research include S.D. Stranks, P. Docampo, H.L. Yip, A.K.Y. Jen and H.J. Snaith.
Keywords for this news article include: Carbon, Energy, Seattle, Washington, Fullerenes, Solar Cell, United States, Nanotechnology, Emerging Technologies, North and Central America
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