Performance improvement of organic bulk heterojunction solar cells by using dihydroxybenzene as additive

  • Cong Yao (姚聪)
  • Li-ying Yang (杨利营)
  • Ya-ling Wang (王亚凌)
  • Wen-jing Qin (秦文静)
  • Shougen Yin (印寿根)
  • Feng-ling Zhang (张风玲)
Article
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Abstract

We report the enhanced performance of organic solar cells (OSCs) based on regioregular poly(3-hexylthiophene) (P3HT) and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM) blend by using dihydroxybenzene as additive in the active layer. The effect of the content of the additives on electrical characteristics of the device is studied. The device with 0.2 wt% dihydroxybenzene additive achieves the best power conversion efficiency (PCE) of 4.58% with J sc of 12.5 mA/cm2, V oc of 0.65 V, and FF of 66.6% under simulated solar illumination of AM 1.5G (100 mW/cm2), compared with the control device with PCE of 3.39% (35% improvement compared with the control device). The XRD measurement reveals that the addition of additives induces the crystallization of P3HT and establishes good inter-network to increase the contact area of donor and acceptor, and then helps charge to be effectively transferred to the electrode to reduce the chance of recombination. All evidences indicate that the dihydroxybenzene is likely to be a promising new type additive that can enhance the performance of organic bulk heterojunction solar cells.

Keywords

Solar Cell Active Layer Fill Factor Power Conversion Efficiency Organic Solar Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Cong Yao (姚聪)
    • 1
    • 2
  • Li-ying Yang (杨利营)
    • 1
    • 2
  • Ya-ling Wang (王亚凌)
    • 1
    • 2
  • Wen-jing Qin (秦文静)
    • 1
    • 2
  • Shougen Yin (印寿根)
    • 1
    • 2
  • Feng-ling Zhang (张风玲)
    • 1
    • 3
  1. 1.Key Laboratory of Display Materials and Photoelectric Devices, Education Ministry of China, School of Materials Science and EngineeringTianjin University of TechnologyTianjinChina
  2. 2.Tianjin Key Lab. for Photoelectric Materials and DevicesTianjin University of TechnologyTianjinChina
  3. 3.Biomolecular and Organic Electronics, Center of Organic Electronics, Department of Physics, Chemistry and Biology (IFM)Linköping UniversityLinköpingSweden

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