A symmetrical donorâacceptorâdonor DâAâD system built by connecting two dithienopyrrole donor blocks to a central electron acceptor obtained by dimerization of 3-alkoxy-4-cyano-thiophene has been synthesized and characterized. The compound combines a high photoluminescence efficiency with a broad absorption spectrum in the solid state and a band gap of 1.70 eV. A preliminary evaluation of the potentialities of this type of compound as donor material in bulk heterojunction solar cells using PC61BM as electron acceptor is presented.
通过将两个二
噻吩并
吡咯供体块连接到由3-烷
氧基-4-
氰基
噻吩二聚化得到的中心电子受体,合成并表征了对称供体-受体-供体D-A-D系统。该化合物在固态下具有高光致发光效率和宽吸收光谱,带隙为1.70 eV。本文初步评估了这种化合物作为使用
PC61BM作为电子受体的块状异质结太阳能电池中的供体材料的潜力。