【作者】 马丹阳； 寇春； 张雪娟； 张吉成； 李文华； 李翠红； 薄志山；

【Author】 Danyang Ma;Chun Kou;Xuejuan Zhang;Jicheng Zhang;Wenhua Li;Cuihong Li;Zhishan Bo;College of Chemistry,Beijing Normal University;

【机构】 北京师范大学化学学院；

【摘要】 通过C-H活化的方法,我们合成了一种新型的以噻吩为核、两个1,8-萘酰亚胺为端基的小分子受体（NI-T-NI）,并将其用于聚合物太阳能电池中。NI-T-NI展现了好的结晶性且在固态时能形成H-聚集。NI-T-NI具有相当高的LUMO能级,这对得到高的开路电压(V_oc)是有利的。将PCDTBT-C12:NI-T-NI用作太阳能电池的活性层,得到了2.01%的光电转换效率和据我们所知目前报道的最高的开路电压1.30 V。这些结果表明,1,8-萘酰亚胺可以作为有用的结构单元来合成聚合物太阳能电池受体材料。更多还原

【Abstract】 Novel small molecule NI-T-NI with a thiophene core and two 1,8-naphthalimide terminal groups was synthesized by direct C-H activation and used as the acceptor for polymer solar cells. NI-T-NI exhibits a good crystallinity and can form H-aggregation in the solid state. NI-T-NI has a rather high-lying LUMO level, which is beneficial for achieving a high Voc. In cooperation with a high-lying LUMO level polymer PCDTBT-C12, a PCE of 2.01% with a high V_oc of 1.30 V has been achieved. As far as we know, a V_oc of 1.30 V is the highest value reported for single junction organic solar cells. Our results have demonstrated that 1,8-naphthalimide could be an useful building block for the synthesis of promising acceptor materials for polymer solar cells.更多还原