Institut für Organische Chemie II und Neue Materialien, Universität Ulm , Albert-Einstein-Allee 11 89081 Ulm, Germany.
Org Lett. 2014 May 16;16(10):2642-5. doi: 10.1021/ol500809e. Epub 2014 May 5.
New acceptor-donor-acceptor (A-D-A) oligomers (1 and 2) containing a central dithieno[3,2-b:2',3'-d]pyrrole unit and end-capping thieno[2,3-c]pyrrole-4,6-dione groups have been synthesized and characterized. Bulk heterojunction solar cells were prepared together with PC61BM and PC71BM, and the best results were obtained for the latter acceptor using 1,8-diiodooctane as an additive. Photovoltaic devices containing these oligomers achieved high external quantum efficiencies up to 50%.
新型给体-受体-给体(A-D-A)齐聚物(1 和 2)含有一个中心二噻吩并[3,2-b:2',3'-d]吡咯单元和端接噻吩并[2,3-c]吡咯-4,6-二酮基团,已被合成并进行了表征。与 PC61BM 和 PC71BM 一起制备了体异质结太阳能电池,并且使用 1,8-二碘辛烷作为添加剂时,后者的受体获得了最佳结果。含有这些齐聚物的光伏器件实现了高达 50%的高光外量子效率。