Abstract
A new A–D–A small molecule, named DTB3TCz, with a weak electron donating unit (carbazole) as the core and a strong electron withdrawing unit (thiobarbituric acid) as the terminal acceptor, was designed and synthesized for organic solar cells. The new molecule shows deep highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels, and narrow optical band gap of 1.61eV. The device based on DTB3TCz:PC71BM blend film without any post treatment shows a high open circuit voltage (Voc) of 1.04V and the optimized device shows a high short-circuit current density (Jsc) of 11.80mAcm−2 and a power conversion efficiency of 5.26%.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
