Hierarchical Nanomorphologies Promote Exciton Dissociation in Polymer/Fullerene Bulk Heterojunction Solar Cells

PTB7 semiconducting copolymer comprising thieno[3,4-b]thiophene and benzodithiophene alternating repeat units set a historic record of solar energy conversion efficiency (7.4%) in polymer/fullerene bulk heterojunction solar cells. To further improve solar cell performance, a thorough understanding o...

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Veröffentlicht in:	Nano Letters 2011-09, Vol.11 (9), p.3707-3713
Hauptverfasser:	Chen, Wei, Xu, Tao, He, Feng, Wang, Wei, Wang, Cheng, Strzalka, Joseph, Liu, Yun, Wen, Jianguo, Miller, Dean J, Chen, Jihua, Hong, Kunlun, Yu, Luping, Darling, Seth B
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties COPOLYMERS Cross-disciplinary physics: materials science rheology Devices DISSOCIATION EFFICIENCY Electron states Electronics Energy Exact sciences and technology Excitation EXCITONS Excitons and related phenomena FULLERENES Fullerenes and related materials diamonds, graphite HETEROJUNCTIONS Historic Materials science Molecular electronics, nanoelectronics Nanostructure Natural energy Photovoltaic cells Photovoltaic conversion Physics POLYMERS SCATTERING Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices SOLAR CELLS Solar cells. Photoelectrochemical cells SOLAR ENERGY SOLAR ENERGY CONVERSION Specific materials
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