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Improved efficiency of ternary the blend polymer solar cells by do** a narrow band gap polymer material

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Abstract

A series of P3HT:PC71BM polymer solar cells (PSCs) with different PIDTDTQx do** concentrations were fabricated to investigate the effect of the PIDTDTQx as a complementary electron donor on the performance of PSCs. The power conversion efficiency (PCE) of the optimized ternary blend PSCs (with 2 wt% PIDTDTQx) reached 3.87%, which is 28% higher than that of the PSCs based on P3HT:PC71BM (control cells). The short-circuit current density (J sc) was increased to 10.20 mA/cm2 compared with the control cells. The PCE improvement could be attributed to more photon harvest and charge carrier transport by appropriate do** PIDTDTQx. The energy transfer from P3HT to PIDTDTQx was demonstrated from the 650 nm emission intensity decrease and the red-shifted emission peaks from 725 nm to 737 nm along with the increase of PIDTDTQx do** concentrations.

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Authors and Affiliations

  1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Bei**g Jiaotong University, Bei**g, 100044, China

    ****ang Zhu, QiaoShi An & FuJun Zhang

  2. School of Electrical Engineering, Bei**g Jiaotong University, Bei**g, 100044, China

    Hui Huang & ChaoQun Jiao

Authors
  1. ****ang Zhu
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  2. QiaoShi An
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  3. Hui Huang
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  4. ChaoQun Jiao
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  5. FuJun Zhang
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Correspondence to Hui Huang or FuJun Zhang.

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  • DOI: https://doi.org/10.1007/s11433-014-5584-0

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