Tanguy Loïc, Malhotra Prateek, Singh Surya Prakash, Brisard Gessie, Sharma Ganesh D, Harvey Pierre D
Department of Chemistry , University of Sherbrooke , 2500 Boulevard de l'Université , Sherbrooke , Quebec J1K 2R1 , Canada.
Department of Physics , LNM Institute of Information Technology (Deemed to be University) , Jamdoli, 302017 Jaipur , India.
ACS Appl Mater Interfaces. 2019 Aug 7;11(31):28078-28087. doi: 10.1021/acsami.9b05463. Epub 2019 Jul 23.
A new low-molecular-weight porphyrin-based polymer, , with pyridine-capped diketopyrrolopyrrole (DPP) has been synthesized, and its optical and electrochemical properties were investigated. The polymer is prepared with a low content of homocoupling units and gives a widely spread absorption from 400 to 900 nm with a narrow optical band gap of 1.46 eV. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels are respectively located at -5.27 and -3.78 eV, respectively. was used as the electron donor, whereas [6,6]-phenyl-C-butyric acid methyl ester (PCBM) and bis(rhodanine)indolo-[3,2-]-carbazole (), a nonfullerene small molecule, were used as acceptors for the fabrication of solution-processed bulk heterojunction polymer solar cells. Overall power conversion efficiencies (PCEs) of 7.31 and 9.16% (record high for porphyrin-containing polymers) were obtained for PCBM and , respectively. A high of 1.01 V and a low of 0.45 eV may explain this new record.
一种新的基于低分子量卟啉的聚合物，带有吡啶封端的二酮吡咯并吡咯（DPP），已经被合成出来，并对其光学和电化学性质进行了研究。该聚合物制备时具有低含量的均偶联单元，在400至900nm范围内有广泛的吸收，光学带隙窄至1.46eV。最高占据分子轨道（HOMO）和最低未占据分子轨道（LUMO）能级分别位于-5.27和-3.78eV。用作电子供体，而[6,6]-苯基-C-丁酸甲酯（PCBM）和双（罗丹宁）吲哚并-[3,2-]-咔唑（），一种非富勒烯小分子，用作受体来制备溶液处理的本体异质结聚合物太阳能电池。对于PCBM和，分别获得了7.31%和9.16%的总体功率转换效率（PCE，含卟啉聚合物的创纪录高值）。1.01V的高开路电压和0.45eV的低能量损失可能解释了这一新高纪录。
