Feng Jiajing, Fu Huiting, Jiang Wei, Zhang Andong, Ryu Hwa Sook, Woo Han Young, Sun Yanming, Wang Zhaohui
Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
ACS Appl Mater Interfaces. 2020 Jul 1;12(26):29513-29519. doi: 10.1021/acsami.0c05548. Epub 2020 Jun 17.
The hybridization of different acceptors remains a fertile ground awaiting exploration, to fully promote the properties of both components. The concept of this work is to exploit a new form of fuller-rylene hybrids as promising acceptors by integrating planar rylene dye and spherical fullerene for boosting the power conversion efficiency. The synthesis of the fuller-rylenes via a straightforward synthetic strategy by one-pot Pd-catalyzed cyclization can be scaled-up. Specifically, our strategy allows the supplements and enhancement of absorption in the visible region, much wider structural and electronic variations by installing R groups as well as decorating R on the perylene core at will, and good processability without compromising the superior characteristics of fullerene. Thus, bay-decorated fuller-rylene revealed a ground-breaking efficiency as high as 8.01%, even outperforming [6,6]-phenyl-C-butyric acid methyl ester (PCBM) as a parallel comparison (7.09%). Our exploration paves a new way for the design of high-efficiency acceptors, which are promising alternatives to PCBM in photovoltaic devices.
不同受体的杂化仍是一个有待探索的丰富领域，以充分提升两种组分的性能。这项工作的理念是通过将平面苝染料和球形富勒烯结合，开发一种新型的富勒苝杂化物作为有前景的受体，以提高功率转换效率。通过一锅法钯催化环化的直接合成策略来合成富勒苝可以扩大规模。具体而言，我们的策略能够在可见光区域实现吸收的补充和增强，通过随意安装R基团以及在苝核上修饰R来实现更广泛的结构和电子变化，并且具有良好的可加工性，同时不损害富勒烯的优异特性。因此，湾位修饰的富勒苝展现出高达8.01%的突破性效率，作为平行对照，甚至超过了[6,6]-苯基-C-丁酸甲酯（PCBM，7.09%）。我们的探索为高效受体的设计开辟了一条新途径，这些受体在光伏器件中是PCBM的有前景的替代物。
