Lu Heng, Zhang Xuejuan, Li Cuihong, Wei Hedi, Liu Qian, Li Weiwei, Bo Zhishan
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Macromol Rapid Commun. 2015 Jul;36(14):1348-53. doi: 10.1002/marc.201500127. Epub 2015 May 8.
Performance enhancement of polymer solar cells (PSCs) is achieved by expanding the absorption of the active layer of devices. To better match the spectrum of solar radiation, two polymers with different band gaps are used as the donor material to fabricate ternary polymer cells. Ternary blend PSCs exhibit an enhanced short-circuit current density and open-circuit voltage in comparison with the corresponding HD-PDFC-DTBT (HD)- and DT-PDPPTPT (DPP)-based binary polymer solar cells, respectively. Ternary PSCs show a power conversion efficiency (PCE) of 6.71%, surpassing the corresponding binary PSCs. This work demonstrates that the fabrication of ternary PSCs by using two polymers with complementary absorption is an effective way to improve the device performance.
通过扩大器件活性层的吸收来实现聚合物太阳能电池（PSC）的性能提升。为了更好地匹配太阳辐射光谱，使用两种具有不同带隙的聚合物作为供体材料来制备三元聚合物电池。与相应的基于HD-PDFC-DTBT（HD）和DT-PDPPTPT（DPP）的二元聚合物太阳能电池相比，三元共混PSC分别表现出增强的短路电流密度和开路电压。三元PSC的功率转换效率（PCE）为6.71%，超过了相应的二元PSC。这项工作表明，使用具有互补吸收的两种聚合物制备三元PSC是提高器件性能的有效方法。
