New donor/acceptor polymers PBDTDPT1 and PBDTDPT2 with alternating benzodithiophene and N-alkylated dioxopyrrolo-thiophene were synthesized. The new polymers had deep HOMO levels of â5.42 and â5.44 eV for PBDTDPT1 and PBDTDPT2, respectively. A PBDTDPT2 based BHJ solar cell device achieved a PCE of 4.79% and Voc of 0.91 V.
新合成了两种交替苯并二
噻吩和N-烷基化二氧
吡咯并
噻吩的供体/受体聚合物
PBDTD
PT1和
PBDTD
PT2。这两种新聚合物的最高占据分子轨道(HOMO)能级分别为-5.42 eV和-5.44 eV。基于
PBDTD
PT2的体异质结太阳能电池器件实现了4.79%的功率转换效率(PCE)和0.91 V的开路电压(Voc)。