In this work, a new non-fused small molecule acceptor Ph-IC based on alkoxyl benzene and IC units was synthesized for photovoltaic applications. The small molecule Ph-IC has a very simple chemical structure and is easily synthesized. Benefited from the coplanar conjugated structure, the O-H and S-H non-covalent interactions, Ph-IC exhibits a narrow optical bandgap of 1.62 eV and a medium electron mobility of 1.84 × 10⁻⁴ cm²V⁻¹s⁻¹. When using Ph-IC as acceptor and a wide-bandgap polymer PBFTZ as donor, the devices show a maximum PCE of 5.68% with V_oc of 0.89 V, J_sc of 12.37 mA cm⁻² and FF of 51.5% under the illumination of AM 1.5 G at 100 mW/cm². This work demonstrates that the simple-structured and low cost non-fused group can also be used as building blocks in high performation n-OS acceptors.

在这项工作中，合成了一种新的基于烷氧基苯和IC单元的非融合小分子受体Ph-IC，用于光伏应用。小分子Ph-IC具有非常简单的化学结构，易于合成。得益于共面共轭结构，OH和SH非共价相互作用，Ph-IC的光学带隙为1.62 eV，电子迁移率为1.84×10 ^-4 cm ² V ^-1 s ^-1。当使用Ph-IC作为受体并使用宽带隙聚合物PBFTZ作为施主时，器件的最大PCE为5.68％，V _oc为0.89 V，J _sc为12.37 mA cm ^-2。在100 mW / cm ²的AM 1.5 G照明下，FF为51.5％。这项工作表明，结构简单，低成本的非融合基团也可以用作高性能n- OS受体的构建基块。