The flexibility in structural design of organic semiconductors endows organic solar cells (OSCs) not only great function-tunabilities, but also high potential toward practical application. In this work, four simple and low-cost non-fullerene acceptors with fluorene or carbazole as central cores, 2-(6-oxo-5,6-dihydro-4H-cyclopenta[c] thiophen-4-ylidene)malononitrile (TC) as terminal groups, and thiophene or furan as linkers, named DTC-T-F, DTC-F-F, DTC-T-C and DTC-F-C, are developed through twostep synthesis, and their photophysical properties, electrochemical behavior and photovoltaic performance are systematically and comparatively studied. The results revealed that fluorene-based acceptors exhibited superior photophysical properties and morphology characteristics than carbazole-based counterparts, and thiophene is more suitable as bridging groups. Combining the advantages of both, the BHJ-OSC based on PTB7-Th:DTC-T-F blend film showed a high PCE of 8.8%, with a V_oc of 0.78 V, a J_sc of 17.46 mA cm⁻², and an FF of 0.65, which is the highest value in the PTB7-Th and fluorene-based acceptors coupled devices, implying its potential application.

有机半导体结构设计的灵活性赋予了有机太阳能电池（OSC）很大的功能可调性，而且在实际应用中具有很大的潜力。在这项工作中，以芴或咔唑为中心核的四个简单且低成本的非富勒烯受体，2-（6-氧代-5,6-二氢-4H-环戊[c]噻吩-4-亚烷基）丙二腈（TC通过两个步骤合成了以端基为基团，以噻吩或呋喃为连接基的DTC-TF，DTC-FF，DTC-TC和DTC-FC，并系统地比较了它们的光物理性质，电化学行为和光伏性能。结果表明，芴基受体比咔唑基受体具有更好的光物理性质和形态学特征，噻吩更适合作为桥基。结合两者的优点，基于PTB7-Th：DTC-TF混合膜的BHJ-OSC显示出8.8％的高PCE，且具有V _oc为0.78 V，J _sc为17.46 mA cm ^-2，并且FF为0.65，这是PTB7-Th和基于芴的受体偶联器件中的最大值，表明其潜在的应用前景。