title: Polymer-Polymer Förster Resonance Energy Transfer Significantly Boosts the Power Conversion Efficiency of Bulk-Heterojunction Solar Cells.
abstract: Optically resonant donor polymers can exploit a wider range of the solar spectrum effectively without a complicated tandem design in an organic solar cell. Ultrafast Förster resonance energy transfer (FRET) in a polymer-polymer system that significantly improves the power conversion efficiency in bulk heterojunction polymer solar cells from 6.8% to 8.9% is demonstrated, thus paving the way to achieving 15% efficient solar cells.
authors.affiliation: CSIR-Network of Institutes for Solar Energy.|Organic and Hybrid Solar Cells Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.|Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106-5090, USA.
authors.forename: Vinay
authors.initials: V
authors.lastname: Gupta
authors.affiliation: CSIR-Network of Institutes for Solar Energy.|Organic and Hybrid Solar Cells Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.|Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi, 110060, India.
authors.forename: Vishal
authors.initials: V
authors.lastname: Bharti
authors.affiliation: CSIR-Network of Institutes for Solar Energy.|Organic and Hybrid Solar Cells Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.|Ultrafast Optoelectronics and Terahertz Photonics Lab, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.
authors.forename: Mahesh
authors.initials: M
authors.lastname: Kumar
authors.affiliation: CSIR-Network of Institutes for Solar Energy.|Organic and Hybrid Solar Cells Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, New Delhi, 110012, India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Chand
authors.affiliation: Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106-5090, USA.
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Heeger
keywords: bulk heterojunction solar cells; energy transfer; polymers; power conversion efficiency; transient spectroscopy