Effect of ZnO Nanowire Doping on the Properties of Poly(3-hexylthiophene) Schottky Diodes


Doping polymers with inorganic nanomaterials to form hybrid nanocomposites is an attractive approach to develop new lightweight optoelectronic materials with unique or improved properties. In this work, poly(3-hexylthiophene) (P3HT) Schottky diodes, doped with ZnO nanowires at different P3HT-to-ZnO concentrations, were studied. Device fabrication was carried out by drop casting the nanocomposite on a Pt electrode followed by thermal evaporation of an Al top electrode. ZnO nanowires were prepared via a physical vapor method with Zn as a source. The nanowires were dispersed in chlorobenzene, then the P3HT powder was added. Properties of the diodes were investigated using capacitance-voltage and current-voltage measurements. In addition, electrical resistance of the nanocomposite films was also investigated using a two-point probe measurement with Pt as Ohmic contacts. Results showed that ZnO nanowire doping decreases the built in potential of the diode and the electrical resistance of the nanocomposite film.

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  1. 1

    K. Winey, and R. Vaia, MRS Bulletin 32, 314 (2007)

    CAS  Article  Google Scholar 

  2. 2

    G. Li, V. Shrotriya, J. Huang, Y. Yao, T. Moriarty, K. Emery, and Y. Yang, Nat. Mat. 4, 864 (2005)

    CAS  Article  Google Scholar 

  3. 3

    Y. Li, A. Rizzo, M. Mazzeo, L. Carbone, L. Manna, R. Cingolani, and G. Gigli, J. Appl. Phys. 97, 113501 (2005).

    Article  Google Scholar 

  4. 4

    Z-X. Xu, V. Roy, P. Stallinga, M. Muccini, S . Toffanin, H-F. Xiang, and C-M. Che, Appl. Phys. Lett. 90, 223509 (2007).

    Article  Google Scholar 

  5. 5

    W. Beek, M. Wienk, and R. Janssen, Adv. Func. Mater. 16, 1112 (2006).

    CAS  Article  Google Scholar 

  6. 6

    D. Olson, S. Shaheen, R. Collins, and D. Ginley, J. Phys. Chem. C. 111, 16670 (2007).

    CAS  Article  Google Scholar 

  7. 7

    R.S. Aga Jr., D. Gunther, A. Ueda, Z. Pan, W.E. Collins, R. Mu, and K. Singer, Nanotechnology 20, 465204 (2009).

    Article  Google Scholar 

  8. 8

    K. Takanezawa, K. Hirota, Q-S. Wei, K. Tajima, and K. Hashimoto, J. Phys. Chem. C. 111, 7218 (2007).

    CAS  Article  Google Scholar 

  9. 9

    S. Sze, Physics of Semiconductor Devices 2nd Ed, John Wiley & Sons, Inc. USA, p. 79 (1981)

    Google Scholar 

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Correspondence to S. Aga Rachel.

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Rachel, S.A., Roberto, A. & Mu, R. Effect of ZnO Nanowire Doping on the Properties of Poly(3-hexylthiophene) Schottky Diodes. MRS Online Proceedings Library 1212, 1108 (2009). https://doi.org/10.1557/PROC-1212-S11-08

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