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Fabrication and Characterization of Bulk Heterojunction Solar Cells Based on Liquid-Crystal Semiconductive Polymer

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DOI: 10.4236/epe.2012.46060    4,213 Downloads   6,463 Views   Citations

ABSTRACT

Bulk heterojunction solar cells based on poly poly(9,9-dioctylfluorene-co-bithiophene) (F8T2) as liquid crystal semiconductive polymer and C60 as electron acceptor were fabricated and characterized. Thermal treatment of the bulk heterojunction films at annealing in the range of glass temperature and liquid crystal transition was performed for tuning optimization with improving the photovoltaic and optical properties. The photovoltaic performance was depended on morphological behavior in active layer at crystal state below glass temperature. The F8T2 thin film worked for electron-donor layer as p-type semiconductor to support charge transfer in active layer. Mechanisms of the photovoltaic properties were discussed on the basis of experimental results.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

A. Suzuki, S. Ogahara, T. Akiyama and T. Oku, "Fabrication and Characterization of Bulk Heterojunction Solar Cells Based on Liquid-Crystal Semiconductive Polymer," Energy and Power Engineering, Vol. 4 No. 6, 2012, pp. 459-464. doi: 10.4236/epe.2012.46060.

References

[1] W. Chen, T. Xu, F. He, W. Wang, C. Wang, J. Strzalka, Y. Liu, J. Wen, D. J. Miller, J. Chen, K. Hong, L. Yu and S. B. Darling, “Hierarchical Nanomorphologies Promote Exciton Dissociation in Polymer/Fullerene Bulk Heterojunction Solar Cells,” Nano Letters, Vol. 11, No. 2, 2011, pp. 3707-3713. doi:10.1021/nl201715q
[2] Y. Liang and L. Yu, “A New Class of Semiconducting Polymers for Bulk Heterojunction Solar Cells with Exceptionally High Performance,” Accounts of Chemical Research, Vol. 43, No. 9, 2010, pp. 1227-1236. doi:10.1021/ar1000296
[3] B. Carsten, J. M. Szarko, H. J. Son, W. Wang, L. Lu, F. He, B. S. Rolczynski, S. J. Lou, L. X. Chen and L. Yu, “Examining the Effect of the Dipole Moment on Charge Separation in Donor—Acceptor Polymers for Organic Photovoltaic Applications,” Journal of the American Chemical Society, Vol. 133, No. 50, 2011, pp. 20468-20475. doi:10.1021/ja208642b
[4] T. Oku, K. Nomura, A. Suzuki and K. Kikuchi, “Effect of Perylenetetracarboxylic Dianhydride Layer as a Hole Blocking Layer on Photovoltaic Performance of Poly-Vinyl- carbazole: C60 Bulk Heterojunction Thin Films,” Thin Solid Films, Vol. 520, No. 7, 2012, pp. 2545-2548. doi:10.1016/j.tsf.2011.10. 163
[5] J. H. Huang, C. Y. Yang, Z. Y. Ho, D. Kekuda, M. C. Wu, F. C. Chien, P. Chen, C. W. Chu and K. C. Ho, “Annealing Effect of Polymer Bulk Heterojunction Solar Cells Based on Polyfluorene and Fullerene Blend,” Organic Electronics, Vol. 10, No. 1, 2009, pp. 27-33. doi:10.1016/j.orgel.2008.09.007
[6] P. A. Levermore, R. Jin, X. Wang, J. C. Mello and D. D. C. Bradley, “Organic Light-Emitting Diodes Based on Poly(9,9-dioctylfluorene-co-bithiophene) (F8T2),” Advanced Functional Materials, Vol. 19, No. 6, 2009, pp. 950- 957. doi:10.1002/adfm.200801260
[7] J.-H. Huang, C.-P. Lee, Z.-Y. Ho, D. Kekuda, C.-W. Chu and K.-C. Ho, “Enhanced Spectral Response in Polymer Bulk Heterojunction Solar Cells by Using Active Materials with Complementary Spectra,” Solar Energy Materials and Solar Cells, Vol. 94, No. 1, 2010, pp. 22-28. doi:10.1016/j.solmat.2009.02.019
[8] E. Lim, B.-J. Jung, M. Chikamatsu, R. Azumi, K. Yase, L.-M. Do and H.-K. Shim, “Synergistic Effect of Polymer and Oligomer Blends for Solution-Processable Organic Thin-Film Transistors,” Organic Electronics, Vol. 9, No. 6, 2008, pp. 952-958. doi:10.1016/j.orgel.2008.06.018
[9] O. Werzera, R. Resela, B. Chernevc, H. Plankc, M. M. Rothmanne, P. Strohriegle, G. Trimmelf, A. Rapalloh and W. Porzioh, “Crystallographic Structure and Morphology of Bithiophene-Fluorene Polymer Nanocrystals,” Polymer, Vol. 52, No. 15, 2011, pp. 3368-3373. doi:10.1016/j.polymer.2011.04.063
[10] K. Sagane, M. Shakutsui, T. Tsutsui and K. Fujita, “Polymer Field Effect Transistors of F8T2 Prepared by Evaporative Spray Deposition using Ultradilute Solution Technique,” Journal of Materials Science and Technology, Vol. 21, No. 2, 2008, pp. 193-196. doi:10.2494/photopolymer.21.193
[11] D. Kekuda, J.-H. Huang, K.-C. Ho and C.-W. Chu, “Modulation of Donor—Acceptor Interface through Thermal Treatment for Efficient Bilayer Organic Solar Cells,” Journal of Physical Chemistry C, Vol. 114, No. 6, 2010, pp. 2764-2768. doi:10.1021/jp910023d
[12] M. C. Gather and D. D. C. Bradley, “An Improved Optical Method for Determining the Order Parameter in Thin Oriented Molecular Films and Demonstration of a Highly Axial Dipole Moment for the Lowest Energy π–π* Optical Transition in Poly(9,9-dioctylfluorene-co-bithiophene),” Advanced Functional Materials, Vol. 17, No. 3, 2007, pp. 479-485. doi:10.1002/adfm.200600056
[13] H. Kuzmany, R. Pfeiffer, M. Hulman and C. Kramberger, “Raman Spectroscopy of Fullerenes and Fullerene-Nanotube Composites,” Philosophical Transactions of the Royal Society of London, Vol. 362, No. 1824, 2004, pp. 2375- 2406.

  
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