Incorporating biphenyls as co-monomers in electron-deficient diketopyrrolopyrrole (DPP) conjugated polymers enables widening the optical band gap to 1.70 eV. Power conversion efficiencies of 3.7-5.7% and high open-circuit voltages of 0.80-0.93 V are obtained in solar cells based on these wide band gap DPP polymers.
在缺电子的二酮
吡咯并
吡咯(
DPP)共轭聚合物中掺入
联苯作为共聚单体可将光学带隙扩展至1.70 eV。基于这些宽带隙
DPP聚合物的太阳能电池具有3.7-5.7%的功率转换效率和0.80-0.93 V的高开路电压。