中国物理B ›› 2015, Vol. 24 ›› Issue (7): 78401-078401.doi: 10.1088/1674-1056/24/7/078401

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

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

樊星a b, 赵谡玲a b, 陈雨c, 张杰c, 杨倩倩a b, 龚伟a b, 苑梦尧c, 徐征a b, 徐叙瑢a b   

  1. a Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Beijing 100044, China;
    b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China;
    c Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2015-01-01 修回日期:2015-02-12 出版日期:2015-07-05 发布日期:2015-07-05
  • 基金资助:

    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), and the Fundamental Research Funds for the Central Universities of China (Grant No. 2012JBZ001).

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

Fan Xing (樊星)a b, Zhao Su-Ling (赵谡玲)a b, Chen Yu (陈雨)c, Zhang Jie (张杰)c, Yang Qian-Qian (杨倩倩)a b, Gong Wei (龚伟)a b, Yuan Meng-Yao (苑梦尧)c, Xu Zheng (徐征)a b, Xu Xu-Rong (徐叙瑢)a b   

  1. a Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Beijing 100044, China;
    b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China;
    c Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-01-01 Revised:2015-02-12 Online:2015-07-05 Published:2015-07-05
  • Contact: Zhao Su-Ling E-mail:slzhao@bjtu.edu.cn
  • Supported by:

    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), and the Fundamental Research Funds for the Central Universities of China (Grant No. 2012JBZ001).

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摘要：

Crystallographic dynamics of blend films of regioregular poly(3-hexylthiophene) (P3HT) mixed with [6-6-]-phenyl-C61-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 P3HT 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 P3HT crystallites increases after being treated by thermal annealing or DIO, which is accompanied by a change in the orientation angle of the P3HT lamellae. The increased ordering of P3HT 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)

Abstract:

Crystallographic dynamics of blend films of regioregular poly(3-hexylthiophene) (P3HT) mixed with [6-6-]-phenyl-C61-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 P3HT 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 P3HT crystallites increases after being treated by thermal annealing or DIO, which is accompanied by a change in the orientation angle of the P3HT lamellae. The increased ordering of P3HT packing induced by thermal annealing or adding DIO contributes to enhanced photovoltaic performance.

Key words: polymer solar cell (PSC), additive, morphology, grazing incidence x-ray diffraction (GIXRD)

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
79.60.Jv (Interfaces; heterostructures; nanostructures) 68.55.-a (Thin film structure and morphology) 71.20.Rv (Polymers and organic compounds)