Nano structure evolution in P3HT:PC<sub>61</sub>BM blend films due to the effects of thermal annealing or by adding solvent

Nano structure evolution in P3HT:PC₆₁BM blend films due to the effects of thermal annealing or by adding solvent

Fan Xing^a),^b), Zhao Su-Ling†^a),^b), Chen Yu^c), Zhang Jie^c), Yang Qian-Qian^a),^b), Gong Wei^a),^b), Yuan Meng-Yao^c), Xu Zheng^a),^b), Xu Xu-Rong^a),^b)

UV–visible absorption spectrum of P3HT:PC₆₁BM blend films with no treatment (black), annealed at 120 °C (red), and with 3 vol.% DIO added (blue).