Nano structure evolution in P3HT:PC_(61)BM blend films due to the effects of thermal annealing or by adding solvent  

作　　者：樊星 赵谡玲 陈雨 张杰 杨倩倩 龚伟 苑梦尧 徐征 徐叙瑢 

机构地区：[1]Key Laboratory of Luminescence and Optical Information,Beijing Jiaotong University [2]Institute of Optoelectronics Technology,Beijing Jiaotong University [3]Institute of High Energy Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第7期582-589,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.51272022 and 11474018);the Research Fund for the Doctoral Program of Higher Education of China(Grant No.20120009130005);the Fundamental Research Funds for the Central Universities of China(Grant No.2012JBZ001)

摘　　要：Crystallographic dynamics of blend films of regioregular poly（3-hexylthiophene）（P3HT） mixed with [6-6-]-phenylC61-butyric acid methyl ester（PC61BM） treated by thermal annealing or by adding solvent 1,8-diiodooctane（DIO） are characterized by 2D-grazing incidence x-ray diffraction（2D-GIXRD）. The results show that the P3 HT chains are primarily oriented with the thiophene ring edge-on to the substrate, with a small fraction of chains oriented plane-on. The interplanar spacing becomes narrow after being treated by DIO, and the coherence length of the P3 HT crystallites increases after being treated by thermal annealing or DIO, which is accompanied by a change in the orientation angle of the P3 HT lamellae. The increased ordering of P3 HT packing induced by thermal annealing or adding DIO contributes to enhanced photovoltaic performance.Crystallographic dynamics of blend films of regioregular poly（3-hexylthiophene）（P3HT） mixed with [6-6-]-phenylC61-butyric acid methyl ester（PC61BM） treated by thermal annealing or by adding solvent 1,8-diiodooctane（DIO） are characterized by 2D-grazing incidence x-ray diffraction（2D-GIXRD）. The results show that the P3 HT chains are primarily oriented with the thiophene ring edge-on to the substrate, with a small fraction of chains oriented plane-on. The interplanar spacing becomes narrow after being treated by DIO, and the coherence length of the P3 HT crystallites increases after being treated by thermal annealing or DIO, which is accompanied by a change in the orientation angle of the P3 HT lamellae. The increased ordering of P3 HT packing induced by thermal annealing or adding DIO contributes to enhanced photovoltaic performance.

关 键 词：polymer solar cell（PSC） ADDITIVE MORPHOLOGY grazing incidence x-ray diffraction（GIXRD） 

分 类 号：O484[理学—固体物理]