Organic solar cells with an ultra thin organized hole transport layer

  • S. Archambeau
  • H. Bock
  • I. Seguy
  • P. Jolinat
  • P. Destruel


Discotic liquid crystals (LC) are promising materials to manufacture devices for organic photovoltaic conversion. These molecules possess a mesophase permitting the fabrication of columnar films having particularly desirable properties of charge transport and exciton diffusion along the axes of the columns. After the deposition of an organic layer on the Indium Tin Oxide (ITO) substrate, a thermal annealing, up to the clarification temperature of the LC, is generally necessary to reach a uniform orientation of the columns. It generally leads to a pronounced droplet formation on the substrate if no surface treatment had been performed on the ITO prior to the film deposition. This paper deals with the study of how this partial dewetting can contribute to good solar cell performances with the formation of an ultra thin organized layer.


Solar Cell Organic Solar Cell Ultra Thin Film Photocurrent Generation Exciton Diffusion 
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The authors are grateful to T. Ondarcuhu (CEMES, Toulouse) for his help in the AFM measurements and their interpretation.


  1. 1.
    A.M. van de Craats, J.M. Warman, A. Fechtenkötter, J.D. Brand, M.A. Harbison, K. Müllen, Adv. Mater. 11, 1469 (1999)CrossRefGoogle Scholar
  2. 2.
    L. Schmidt-Mende, A. Fechtenkötter, K. Müllen, R.H. Friend, J.D. MacKenzie, Physica E 14, 263 (2002)CrossRefGoogle Scholar
  3. 3.
    K. Petritsch, R.H. Friend, A. Lux, G. Rozenberg, S.C. Moratti, A.B. Holmes, Synth. Met. 102, 1776 (1999)CrossRefGoogle Scholar
  4. 4.
    B. Kippelen, S. Yo, B. Domercq, C.L. Donley, C. Carter, W. Xia, B.A. Minch, D.F. O’Brien, N.R. Armstrong, NCPV and Solar Program Review Meeting NREL, 2003, p. 431Google Scholar
  5. 5.
    M. Oukachmih, P. Destruel, I. Seguy, G. Ablart, P. Jolinat, S. Archambeau, M. Mabiala, S. Fouet, H. Bock, Sol. Energy Mater. Sol. Cells 85, 535 (2005)CrossRefGoogle Scholar
  6. 6.
    E. Grelet, H. Bock, Europhys. Lett. 73, 712 (2006)CrossRefGoogle Scholar
  7. 7.
    S. Archambeau, T.P. Nguyen, H. Bock, E. Grelet, I. Seguy, P. Jolinat, P. Destruel, Appl. Surf. Sci. Available online 22 May 2006Google Scholar
  8. 8.
    S. Alibert-Fouet, S. Dardel, M. Oukachmih, S. Achambeau, I. Seguy, P. Jolinat, P. Destruel, H. Bock, ChemPhysChem 4, 983 (2003)CrossRefGoogle Scholar
  9. 9.
    A. Sharma, G. Reiter, J. Coll. Int. Sci. 178, 383 (1996)CrossRefGoogle Scholar
  10. 10.
    I. Seguy, P. Jolinat, P. Destruel, J. Farenc, R. Mamy, H. Bock, J. Ip, T.P. Nguyen, J. Appl. Phys. 89, 5442 (2001)CrossRefGoogle Scholar
  11. 11.
    P. Peumans, V. Bulovic, S.R. Forrest, Appl. Phys. Lett. 76, 2650 (2000)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • S. Archambeau
    • 1
  • H. Bock
    • 2
  • I. Seguy
    • 1
  • P. Jolinat
    • 1
  • P. Destruel
    • 1
  1. 1.Laboratoire LAPLACEUniversité Paul SabatierToulouse Cedex 9France
  2. 2.Centre de Recherche Paul PascalPessacFrance

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