Here we demonstrate that the power conversion efficiency of a P3HT:PC61BM bulk heterojunction solar cell can be improved from 3.4% to 4.3% by adding 10% of a cyclopent[hi]aceanthrylene derivative (CPA), which is an ambipolar small-molecule semiconductor, to form a ternary blend BHJ solar cell. This enhanced power conversion efficiency arises from improvement of both short-circuit current and open-circuit voltage because the addition of CPA not only provides absorption complementary to that of P3HT, but also leads to longer charge carrier lifetime in the bulk heterojunction.
在这里,我们证明了在 P3HT:PC61BM 体异质结太阳能电池中加入 10% 的环戊并[hi]洋二
丙烯衍
生物 (CPA),形成三元共混 BHJ 太阳能电池,其功率转换效率可从 3.4% 提高到 4.3%。功率转换效率的提高源于短路电流和开路电压的改善,因为 CPA 的加入不仅提供了与 P3HT 互补的吸收,而且还延长了体异质结中电荷载流子的寿命。