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首页> 外文期刊>Dyes and Pigments >An all small molecule organic solar cell based on a porphyrin donor and a non-fullerene acceptor with complementary and broad absorption
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An all small molecule organic solar cell based on a porphyrin donor and a non-fullerene acceptor with complementary and broad absorption

机译：基于卟啉供体的所有小分子有机太阳能电池和具有互补性和宽吸收的非富勒烯受体

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摘要

A thieno[3,2-b]thiophene-functionalized porphyrin molecule (DEP-TT) with the ethynylene bridges between the diketopyrrolopyrrole and porphyrin units has been designed and synthesized as the donor material. DEP-TT exhibits a broad absorption wavelength in the visible region with the onset absorption to 898 nm of the film and a low optical band gap of 1.38 eV. IDT-C8, as the acceptor material has a relatively strong absorption spectrum ranging from 500 to 750 nm in the solid film, which exactly fills the absorption trough of DEP-TT. The power conversion efficiency (PCE) of all small molecule increased from 0.64% (J(sc) = 2.61 mA cm(-2), V-oc = 0.82 V, and FF = 0.30) to 5.14% (J(sc) = 11.15 mA cm(-2), V-oc = 0.71 V, and FF = 0.65) after solvent vapor annealing. The PCE of 5.14% provided valuable recommendation based on porphyrin all small molecule system, since few work has involved in this field.
机译：噻吩并[3,2-B]噻吩官能化的卟啉分子（DEP-TT）与二酮吡咯和卟啉单位之间的乙炔桥设计并作为供体材料设计和合成。 DEP-TT在可见区域中表现出宽吸收波长，并开始吸收至898nm的薄膜和1.38eV的低光带隙。 作为受体材料的IDT-C8具有相对强的吸收光谱，其在固体膜中的500至750nm范围内，其精确地填充了DEP-TT的吸收槽。 所有小分子的功率转换效率（PCE）增加到0.64％（J（SC）= 2.61mA cm（-2），V-oc = 0.82V，FF = 0.30）至5.14％（J（SC）= 溶剂蒸汽退火后，11.15 mA cm（-2），V-oc = 0.71V和FF = 0.65）。 5.14％的PCE提供了基于卟啉所有小分子系统的有价值的推荐，因为很少有工作已经参与了这一领域。

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