基于二噻吩并[3,2-:2',3'-d]吡咯并[3,4-c]咔唑的受体用于高效有机太阳能电池，其光电响应超过 1000nm，能量损耗极低。
Dithienopicenocarbazole-Based Acceptors for Efficient Organic Solar Cells with Optoelectronic Response Over 1000 nm and an Extremely Low Energy Loss.
机构信息
Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
Institute of Polymers, Department of Chemistry, Nanchang University , Nanchang 330031, China.
出版信息
J Am Chem Soc. 2018 Feb 14;140(6):2054-2057. doi: 10.1021/jacs.7b13239. Epub 2018 Feb 5.
Two cheliform non-fullerene acceptors, DTPC-IC and DTPC-DFIC, based on a highly electron-rich core, dithienopicenocarbazole (DTPC), are synthesized, showing ultra-narrow bandgaps (as low as 1.21 eV). The two-dimensional nitrogen-containing conjugated DTPC possesses strong electron-donating capability, which induces intense intramolecular charge transfer and intermolecular π-π stacking in derived acceptors. The solar cell based on DTPC-DFIC and a spectrally complementary polymer donor, PTB7-Th, showed a high power conversion efficiency of 10.21% and an extremely low energy loss of 0.45 eV, which is the lowest among reported efficient OSCs.
两种基于高度富电子核心二噻吩并[3,2-b:2',3'-d]吡咯并[1,2-a]咔唑（DTPC）的螯合非富勒烯受体 DTPC-IC 和 DTPC-DFIC 被合成出来，其具有超窄带隙（低至 1.21 eV）。二维含氮共轭 DTPC 具有很强的供电子能力，这导致在衍生受体中产生强烈的分子内电荷转移和分子间 π-π 堆积。基于 DTPC-DFIC 和光谱互补聚合物给体 PTB7-Th 的太阳能电池表现出 10.21%的高光能量转换效率和极低的能量损耗（0.45 eV），这在报道的高效 OSCs 中是最低的。
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