A fused-undecacyclic electron acceptor IUIC has been designed, synthesized and applied in organic solar cells (OSCs) and semitransparent organic solar cells (ST-OSCs). In comparison with its counterpart, fused-heptacyclic ITIC4, IUIC with a larger π-conjugation and a stronger electron-donating core exhibits a higher LUMO level (IUIC: −3. 87 eV vs ITIC4: −3.97 eV), 82 nm red-shifted absorption with larger extinction coefficient and smaller optical bandgap, and higher electron mobility. Thus, IUIC-based OSCs show higher values in open-circuit voltage, short-circuit current density, and thereby much higher power conversion efficiency (PCE) than those of the ITIC4-based counterpart. The as-cast OSCs based on PTB7-Th: IUIC without any extra treatment yield PCEs of up to 11.2%, higher than that of the control devices based on PTB7-Th: ITIC4 (8.18%). The as-cast ST-OSCs based on PTB7-Th: IUIC without any extra treatment afford PCEs of up to 10.2% with an average visible transmittance (AVT) of 31%, higher than those of the control devices based on PTB7-Th: ITIC4 (PCE = 6.42%, AVT = 28%).

中文翻译：

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带有熔融-非十环电子受体的半透明太阳能电池的效率突破10％

已经设计，合成并稠合了非十环电子受体IUIC，并将其应用于有机太阳能电池（OSC）和半透明有机太阳能电池（ST-OSC）中。与对应的稠合七环ITIC4相比，具有更大的π共轭和更强的供电子核的IUIC表现出更高的LUMO水平（IUIC：-3。87 eV vs ITIC4：-3.97 eV），82 nm红色-具有更大的消光系数和更小的光学带隙以及更高的电子迁移率的位移吸收。因此，基于IUIC的OSC与基于ITIC4的OSC相比，在开路电压，短路电流密度和功率转换效率（PCE）方面显示出更高的值。在不进行任何额外处理的情况下，基于PTB7-Th：IUIC的铸态OSC产生的PCE高达11.2％，高于基于PTB7-Th：ITIC4的对照设备（8.18％）。