Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6): 1034-1037.doi: 10.1007/s40242-016-6083-9

• Articles • Previous Articles     Next Articles

Charge Carrier Dynamics in PDPP-F/PCBM Heterojunction Solar Cells

ZHANG Peng1, TAN Mingrui2, SUI Ning2, WANG Yinghui2,3, TIAN Chunlin1, ZHANG Hanzhuang2,3   

  1. 1. College of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China;
    2. Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, P. R. China;
    3. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun 130012, P. R. China
  • Received:2016-03-08 Revised:2016-06-22 Online:2016-12-01 Published:2016-09-12
  • Contact: TIAN Chunlin, E-mail:tcl@cust.edu.cn; ZHANG Hanzhuang, E-mail:zhanghz@jlu.edu.cn E-mail:tcl@cust.edu.cn;zhanghz@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.51502109, 21573094, 11274142, 11474131) and the National Fund for Fostering Talents of Basic Science of China(No.J1103202).

Abstract:

The morphology dependent of migration and recombination kinetics of charge carriers in the polymer solar cell based on poly {2,7'-9,9-dioctylfluorene-alt-5-diethylhexyl-3,6-bis(5-bromothiophen-2-yl)pyrrolo[3,4-c]-pyrrole-1,4-dione}(PDPP-F) was investigated with photo-induced charge carrier extraction by linearly increasing voltage technique. The recombination coefficient of charge carriers decreased and the mobility of charge carriers increased, after the mass ratio of[6,6]-phenyl-C61-butyric acid methyl ester(PCBM) increased from 3:2 to 2:1. Meanwhile, both of them were sensitive to the applied electric field and could be together responsible for the improvement of voltage performance of polymer solar cell.

Key words: Solar cell, Bulk-heterojunction, Charge carrier transport, Charge carrier recombination