通过添加窄带隙聚合物作为第二施主来提高全聚合物太阳能电池的性能。
Improving the all-polymer solar cell performance by adding a narrow bandgap polymer as the second donor.
作者信息
Wang Kai, Dong Sheng, Chen Xudong, Zhou Ping, Zhang Kai, Huang Jun, Wang Ming
机构信息
Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University Shanghai 201620 China
Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology Guangzhou 510640 China
出版信息
RSC Adv. 2020 Oct 19;10(63):38344-38350. doi: 10.1039/d0ra06143c. eCollection 2020 Oct 15.
Ternary all-polymer solar cells are fabricated using an N2200 acceptor and two donor polymers (PF2 and PM2) with complementary absorption. The major donor PF2 is a relatively wide bandgap polymer that contributes the most photon absorption in the UV-vis region while the second donor PM2 improves the light harvesting due to its strong absorption in the near-IR region. By carefully tuning the ratio of two donor polymers, the best ratio of 9 : 1 : 5 (PF2 : PM2 : N2200) is achieved and shows a PCE of 6.90%, which is better than two binary devices. This work demonstrates an effective strategy of utilizing a narrow bandgap donor polymer as the second donor to improve the performance of all-polymer solar cells.
三元全聚合物太阳能电池是使用N2200受体和两种具有互补吸收特性的供体聚合物（PF2和PM2）制备的。主要供体PF2是一种带隙相对较宽的聚合物，在紫外-可见区域贡献了最多的光子吸收，而第二种供体PM2由于其在近红外区域的强吸收而改善了光捕获。通过仔细调整两种供体聚合物的比例，实现了9∶1∶5（PF2∶PM2∶N2200）的最佳比例，并显示出6.90%的光电转换效率，优于两个二元器件。这项工作展示了一种利用窄带隙供体聚合物作为第二种供体来提高全聚合物太阳能电池性能的有效策略。
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