J. Semicond. > 2015, Volume 36 > Issue 2 > 023006
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SEMICONDUCTOR MATERIALS

Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification

Duofa Wang1, 2, Haizheng Tao1, , Xiujian Zhao1, Meiyan Ji2 and Tianjin Zhang2

+ Author Affiliations

 Corresponding author: Haizheng Tao, E-mail: thz@whut.edu.cn

DOI: 10.1088/1674-4926/36/2/023006

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Abstract: A TiO2/P3HT hybrid solar cell was fabricated by infiltrating P3HT into the pores of TiO2 nanorod arrays. To further enhance the photovoltaic performance, anthracene-9-carboxylic acid was employed to modify the interface of TiO2/P3HT before P3HT was coated. Results revealed that the interface treatment significantly enhances the photovoltaic performance of the cell. The efficiency of the hybrid solar cells reaches 0.28% after interface modification, which is three times higher compared with the un-modified one. We find that except for the increased exciton dissociation efficiency recognized by the previous reports, the suppressing of electron back recombination is another important factor leading to the enhanced photovoltaic performance.

Key words: TiO2, solar cell, interface modification



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Fig. 1.  SEM images of TiO$_{2}$ nanorod arrays (a) without and (b) with infiltration of P3HT, insets are the corresponding sectional views.

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Fig. 2.  UV-vis diffuse reflection spectra of TiO$_{2}$ nanorod array, hybrid thin films of TiO$_{2}$/ACA, TiO$_{2}$/P3HT and TiO$_{2}$ /ACA/P3HT.

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Fig. 3.  Photocurrent-voltage characteristic curves of TiO$_{2}$/P3HT and TiO$_{2}$/ACA/P3HT hybrid solar cells.

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Fig. 4.  Room temperature (a) PL spectra and (b) TRPL decay curves of TiO$_{2}$/P3HT and TiO$_{2}$/ACA/P3HT.

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Fig. 5.  The OCVD curves of the hybrid solar cells, inset are the decay-time constants versus $V_{\rm oc}$.

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Fig. 6.  Nyquist plot of the EIS of hybrid solar cells for TiO$_{2}$/P3HT and TiO$_{2}$/ACA/P3HT.

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Table 1.   Parameters of the photovoltaic performance of P3HT/TiO$_{2}$ solar cells with and without interfacial modification.

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    Received: 04 June 2014 Revised: Online: Published: 01 February 2015

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      Article Navigation >  Journal of Semiconductors  > 2015  >  36(2): 023006
      Duofa Wang, Haizheng Tao, Xiujian Zhao, Meiyan Ji, Tianjin Zhang. Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification[J]. Journal of Semiconductors, 2015, 36(2): 023006. doi: 10.1088/1674-4926/36/2/023006 ****D F Wang, H Z Tao, X J Zhao, M Y Ji, T J Zhang. Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification[J]. J. Semicond., 2015, 36(2): 023006. doi: 10.1088/1674-4926/36/2/023006.
      Citation:
      Duofa Wang, Haizheng Tao, Xiujian Zhao, Meiyan Ji, Tianjin Zhang. Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification[J]. Journal of Semiconductors, 2015, 36(2): 023006. doi: 10.1088/1674-4926/36/2/023006 ****
      D F Wang, H Z Tao, X J Zhao, M Y Ji, T J Zhang. Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification[J]. J. Semicond., 2015, 36(2): 023006. doi: 10.1088/1674-4926/36/2/023006.
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      Enhanced photovoltaic performance in TiO2/P3HT hybrid solar cell by interface modification

      DOI: 10.1088/1674-4926/36/2/023006
      • 1.

        State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China

      • 2.

        Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, China

      Funds:

      Project supported by the China Postdoctoral Science Foundation (Nos. 2012M511690, 2014T70747), the Research Fund for the Doctoral Program of Higher Education of China (No. 20130143130002), the National Natural Science Foundation of China (Nos. 11174071, 11304088, 51372180), the Natural Science Foundation of Hubei Province (Nos. 2011CDB056, 2013CFA008), and the Science and Technology Planning Project of Wuhan City (No. 201210711237).

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      • Corresponding author: E-mail: thz@whut.edu.cn
      • Received Date: 2014-06-04
      • Accepted Date: 2014-09-17
      • Published Date: 2015-01-25

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