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Efficient organic photovoltaic diodes based on doped pentacene

Nature volume 403, pages 408–410 (2000)Cite this article

A Retraction to this article was published on 06 March 2003

Abstract

Recent work on solar cells based on interpenetrating polymer networks1,2,3 and solid-state dye-sensitized devices4 shows that efficient solar-energy conversion is possible using organic materials. Further, it has been demonstrated that the performance of photovoltaic devices based on small molecules can be effectively enhanced by doping the organic material with electron-accepting molecules5. But as inorganic solar cells show much higher efficiencies, well above 15 per cent, the practical utility of organic-based cells will require their fabrication by lower-cost techniques, ideally on flexible substrates. Here we demonstrate efficiency enhancement by molecular doping in Schottky-type photovoltaic diodes based on pentacene—an organic semiconductor that has received much attention as a promising material for organic thin-film transistors6,7,8, but relatively little attention for use in photovoltaic devices9,10. The incorporation of the dopant improves the internal quantum efficiency by more than five orders of magnitude and yields an external energy conversion efficiency as high as 2.4 per cent for a standard solar spectrum. Thin-film devices based on doped pentacene therefore appear promising for the production of efficient ‘plastic’ solar cells.

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Figure 1: Chemical structure and current–voltage characteristics.
Figure 2: Charge-carrier mobility, internal quantum efficiency (IQE) and photovoltaic efficiency as functions of carrier concentration.
Figure 3: IQE and optical absorption of doped pentacene photovoltaic cells as function of energy.
Figure 4: Charge-carrier generation and separation in iodine-doped pentacene.

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References

  1. Halls, J. J. M. et al. Efficient photodiodes from interpenetrating polymer networks. Nature 376, 498–500 (1995).

    Article  ADS  CAS  Google Scholar 

  2. Yu, G., Gao, J., Hummelen, J. C., Wudl, F. & Heeger, A. J. Polymer photovoltaic cells: Enhanced efficiencies via a network of internal donor-acceptor heterojunctions. Science 270, 1789–1791 (1995).

    Article  ADS  CAS  Google Scholar 

  3. Granström, M. et al. Laminated fabrication of polymeric photovoltaic diodes. Nature 395, 257–260 (1998).

    Article  ADS  Google Scholar 

  4. Bach, U. et al. Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies. Nature 395, 583–585 (1998).

    Article  ADS  CAS  Google Scholar 

  5. Chamberlain, G. A., Cooney, P. J. & Dennison, S. Photovoltaic properties of merocyanine solid-state photocells. Nature 289, 45–47 (1981).

    Article  ADS  CAS  Google Scholar 

  6. Lin, Y.-Y., Gundlach, D. J., Nelson, S. F. & Jackson, T. N. Pentacene-based organic thin-film transistors. IEEE Trans. Electr. Dev. 44, 1325–1331 (1997).

    Article  ADS  CAS  Google Scholar 

  7. Nelson, S. F., Lin, Y.-Y., Gundlach, D. J. & Jackson, T. N. Temperature-independent transport in high-mobility pentacene transistors. Appl. Phys. Lett. 72, 1854–1856 (1998).

    Article  ADS  CAS  Google Scholar 

  8. Dimitrakopoulos, C. D., Purushothaman, S., Kymissis, J., Callegari, A. & Shaw, J. M. Low voltage organic transistors on plastic comprising high dielectric constant gate insulators. Science 283, 822–824 (1999).

    Article  ADS  CAS  Google Scholar 

  9. Signerski, R., Jarosz, G. & Godlewski, J. Photoelectric properties of heterojunctions formed from di-(pyridyl)-perylenetetracarboxylic diimide and copper phtalocyanine or pentacene. Synth. Met. 94, 135–137 (1998).

    Article  CAS  Google Scholar 

  10. Videlot, C., Fichou, D. & Garnier, F. Photovoltaic cells based on organic semiconductors. J. Chim. Phys. 95, 1335–1338 (1998).

    Article  CAS  Google Scholar 

  11. Laudise, R. A., Kloc, Ch., Simpkins, P. G. & Siegrist, T. Physical vapor growth of organic semiconductors. J. Cryst. Growth 187, 449–454 (1998).

    Article  ADS  CAS  Google Scholar 

  12. Minikata, T, Imai, H., Ozaki, M. & Saco, K. Structural studies on highly ordered and highly conductive thin films of pentacene. J. Appl. Phys. 72, 5220–5225 (1992).

    Article  ADS  Google Scholar 

  13. Schön, J. H., Kloc, Ch., Laudise, R. A. & Batlogg, B. Electrical properties of single crystals of rigid rodlike conjugate molecules. Phys. Rev. B 58, 12952–12957 (1998).

    Article  ADS  Google Scholar 

  14. Minakata, T., Nagoya, I. & Ozaki, M. Highly ordered and conducting thin films of pentacene doped with iodine vapor. J. Appl. Phys. 69, 7354–7356 (1991).

    Article  ADS  CAS  Google Scholar 

  15. Hovel, H. J. Semiconductors and Semimetals Vol. 11, Solar Cells 71–92 (Academic, New York, 1975).

    Google Scholar 

  16. Karl, N. in Semiconductors (eds Madelung, O., Schulz, M. & Weiss, H.) Subvolume 17i, 106–218 (Landolt-Börnstein, New Series Vol. 17, Springer-Verlag, Berlin, 1985).

    Google Scholar 

  17. Chamberlain, G. A. Depletion layer studies and carrier photogeneration in doped merocyanine photovoltaic cells. J. Appl. Phys. 53, 6262–6269 (1982).

    Article  ADS  CAS  Google Scholar 

  18. Videlot, C. & Fichou, D. Influence of molecular orientation on the photovoltaic properties of octithiophene. Synth. Met. 102, 885–888 (1999).

    Article  CAS  Google Scholar 

  19. Tang, C. W. Two-layer organic photovoltaic cell. Appl. Phys. Lett. 48, 183–185 (1986).

    Article  ADS  CAS  Google Scholar 

  20. Wöhrle, D. et al. Investigations of n/p junction photovoltaic cells of perylenetetracarboxylic acid diimides and phthalocyanines. J. Mater. Chem. 5, 1819–1829 (1995).

    Article  Google Scholar 

  21. Wöhrle, D. & Meissner, D. Organic solar cells. Adv. Mater. 3, 129–138 (1991).

    Article  Google Scholar 

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Acknowledgements

We thank E. Chandross, Z. Bao, H. Katz and A. Dodabalapur for helpful discussions. J.H.S. gratefully acknowledges financial support by the ‘Deutsche Forschungsgemeinschaft’.

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Authors and Affiliations

  1. Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, 07974-0636, New Jersey, USA

    J. H. Schön, Ch. Kloc, E. Bucher & B. Batlogg

  2. University of Konstanz, Faculty for Physics, P.O. Box X916, Konstanz, D-78457, Germany

    J. H. Schön & E. Bucher

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  1. J. H. Schön
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Correspondence to J. H. Schön.

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Schön, J., Kloc, C., Bucher, E. et al. Efficient organic photovoltaic diodes based on doped pentacene. Nature 403, 408–410 (2000). https://doi.org/10.1038/35000172

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