| 초록 |
Organic solar cells (OSCs) have been developed due to their special properties as lightweight, low cost fabrication, and flexibility. Recently, the developments of polymer based electron donor materials and the device optimization in single junction OSCs have achieved the power conversion efficiencies (PCEs) over 11%. Despite the success of polymer donors, small molecule donors have attracted considerable attention owing to tunable energy levels, no batch-to-batch variation, and so on. In this work, we designed and synthesized acceptor-donor-acceptor (A-D-A) type small molecule donors, including indacenodithieno[3,2-b]thiophene (IDTT) as electron donating moiety and new electron accepting units as end groups. Herein, we fabricated the OSCs with new donors and PC71BM as acceptor to investigate the photovoltaic properties. |
