An acceptor-donor-acceptor (A-D-A)-type non-fullerene acceptor (NFA), PTTtID-Cl, featuring thieno[3,2-b]thieno[2''',3''':4'',5'']-pyrrolo[2'',3'':4',5']thieno[2',3':4,5]thieno-[2,3-d]pyrrole (DTPTt) as the electron-rich core and 2-(5,6-dichloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (ID-Cl) as the peripheral electron-deficient terminal group was synthesized and characterized. PTTtID-Cl exhibited strong absorption in the range of 700-850 nm in CHCl3 and redshifted absorption centered at 881 nm in a thin film. The near infrared (NIR)-absorption of PTTtID-Cl was combined with a low-bandgap polymer donor (PTB7-Th) to achieve binary and semitransparent organic photovoltaics (OPVs) with a power conversion efficiency (PCE) of 8.9 % and 7.7 % (with an average visible transmittance (AVT) of 16.7 %), respectively. A ternary device with a ratio of PM7/PTTtID-Cl/IT-4F=1:0.15:0.85 (w/w) achieved a short-circuit current density of 19.46 mA cm-2 , an open-circuit voltage of 0.87 V, and a fill factor of 71.2 %, giving a PCE of 12.0 %. In addition, by employing the Ag/ITO/Ag microcavity structure, semitransparent colorful binary organic photovoltaics (OPVs) with superior transparency of 27.9 % at 427 nm and 22.7 % at 536 nm for blue and green devices, respectively, were prepared. The semitransparent colorful devices based on the optimized ternary blend gave PCEs of 8.7 %, 8.4 %, and 9.1 % for blue, green, and red devices, respectively. These results indicate the promising potential of PTTtID-Cl as a NIR-absorption NFA for applications in semitransparent colorful binary and ternary OPVs.

中文翻译：

---

高性能半透明和彩色二元和三元有机光伏电池的近红外吸收小分子受体。

受体-供体-受体（ADA）型非富勒烯受体（NFA）PTTtID-Cl，具有thieno [3,2-b] thieno [2'''，3'''：4''，5' '] -pyrrolo [2''，3''：4'，5'] thieno [2'，3'：4,5] thieno- [2,3-d]吡咯（DTPTt）作为富电子核合成并表征了2-（5,6-二氯-3-氧代-2,3-二氢-1H-茚-1-基）丙二腈（ID-Cl）作为外围电子不足的端基。PTTtID-Cl在CHCl3中显示出在700-850 nm范围内的强吸收，并在薄膜中以881 nm为中心出现红移吸收。将PTTtID-Cl的近红外（NIR）吸收与低带隙聚合物供体（PTB7-Th）结合使用，以实现功率转换效率（PCE）为8.9％和7.的二元和半透明有机光伏（OPV）。分别为7％（平均可见光透射率（AVT）为16.7％）。比例为PM7 / PTTtID-Cl / IT-4F = 1：0.15：0.85（w / w）的三元器件的短路电流密度为19.46 mA cm-2，开路电压为0.87 V，填充因子为71.2％，PCE为12.0％。此外，通过采用Ag / ITO / Ag微腔结构，制备了蓝色和绿色器件的半透明彩色二元有机光伏（OPV），分别在427 nm和536 nm的透明度分别为27.9％和22.7％。基于优化的三元共混物的半透明彩色设备的蓝色，绿色和红色设备的PCE分别为8.7％，8.4％和9.1％。这些结果表明，PTTtID-Cl作为吸收近红外光的NFA具有潜力，可用于半透明的彩色二元和三元OPV。