Growth Front Roughening of Room Temperature Deposited Oligomer Thin Films


Growth front scaling aspects are investigated for PPV-type oligomer thin films vapor- deposited onto silicon substrates at room temperature. For film thickness d~15-300 nm, commonly used in optoelectronic devices, correlation function measurement by atomic force microscopy yields roughness exponents in the range H=0.45±0.04, and an rms roughness amplitude which evolves with film thickness as a power law σ dβ with β=0.28±0.05. The non-Gaussian height distribution and the measured scaling exponents (H and β) suggest a roughening mechanism close to that described by the Kardar-Parisi-Zhang scenario.

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  1. 1.

    P. Meakin, Fractals, Scaling, and Growth Far from Equilibrium (Cambridge University Press, Cambridge, 1998) see also here p. 408; J. Krim and G. Palasantzas, Int. J. of Mod. Phys. B 9, 599 (1995); A.-L. Barabási and H. E. Stanley, Fractal Concepts in Surface Growth (Cambridge University Press, Cambridge, 1995).

    Google Scholar 

  2. 2.

    Polymers for Electronic and Photonic Applications, edited by C.P. Wong (Academic Press, Boston, 1993); T.-M. Lu and J. A. Moore, Mat. Res. Soc. Bull. 20, 28 (1997).

    Google Scholar 

  3. 3.

    G. W. Collins, S. A. Letts, E. M. Fearon, R. L. McEachern, and T. P. Bernat, Phys. Rev. Lett. 73, 708 (1994).

    CAS  Article  Google Scholar 

  4. 4.

    F. Biscarini, P. Samorí, O. Greco, and R. Zamboni, Phys. Rev. Lett. 78, 2389 (1997); F. Biscarini, R. Zamboni, P. Samori, P. Ostoja, C. Taliani, Phys. Rev. B 52, 14868 (1995).

    CAS  Article  Google Scholar 

  5. 5.

    Y.-P. Zhao, J. B. Fortin, G. Bonvallet, G.-C. Wang and T.-M. Lu, Phys. Rev. Lett. 85, 3229 (2000).

    CAS  Article  Google Scholar 

  6. 6.

    P. F. van Hutten, V. V. Krasnikov, and G. Hadziioannou, Acc. Chem. Res. 32, 257 (1999).

    Article  Google Scholar 

  7. 7.

    H. Sirringhaus, P. J. Brown, R. H. Friend, M. M. Nielsen, K. Bechgaard, B.M.W. Langeveld-Voss, A. J. Spiering, R. A. J. Janssen, P. Herwig, D. M. de Leeuw, Nature 401, 685 (1999).

    CAS  Article  Google Scholar 

  8. 8.

    Semiconducting Polymers: Chemistry, Physics and Engineering, edited by G. Hadziioannou and P.F. van Hutten (Wiley-VCH, Weinheim, 2000).

    Google Scholar 

  9. 9.

    H. J. Brouwer, V. V. Krasnikov, T. A. Pham, R. E. Gill, P. F. van Hutten, and G. Hadziioannou, Chemical Phys. 65, 227 (1998).

    Google Scholar 

  10. 10.

    D. Tsamouras, W. Geens, P. F. van Hutten, J. Poortmans, and G. Hadziioannou, Polym. Mater. Sci. Eng. 83, 293 (2000). For the technique of thermal gravimetric analysis (TGA) see A. Blaezek, Thermal Analysis (Van Nostrand Reinhold, London, 1972); B. Dickens, J.H. Flynn in Polymer Characterization: Spectroscopic, Chromatographic, and Physical Instrumental Methods edited by C.D. Craver (American Chemical Society, Washington D.C., 1983).

    CAS  Google Scholar 

  11. 11.

    R. E. Gill, A. Meetsma, and G. Hadziioannou, Adv. Mater. 8, 212 (1996).

    CAS  Article  Google Scholar 

  12. 12.

    See for example D. Sarid, Scanning Force Microscopy with Applications to Electric, Magnetic and Atomic Forces, Revised Edition (Oxford University Press, New York, 1994).

    Google Scholar 

  13. 13.

    G. Palasantzas, Phys. Rev. E 56, 1254 (1997).

    CAS  Article  Google Scholar 

  14. 14.

    G. Palasantzas and J. Krim, Phys. Rev. Lett. 73, 3564 (1994).

    CAS  Article  Google Scholar 

  15. 15.

    W. E. Wolf and J. Villain, Europhys. Lett. 13, 389 (1990).

    CAS  Article  Google Scholar 

  16. 16.

    Z. -W. Lai and S. Das Sarma, Phys. Rev. Lett. 66, 2348 (1991).

    CAS  Article  Google Scholar 

  17. 17.

    M. Kardar, G. Parisi, and Y. C. Zhang, Phys. Rev. Lett. 56, 889 (1986). For skewed distribution aspects in Directed Polymer Problems in Random Media (DPRM) related to KPZ growth see also T. Halpin-Heally, Phys. Rep. 254, 215 (1995).

    CAS  Article  Google Scholar 

  18. 18.

    M. Forest and L. -H. Tang, Phys. Rev. Lett. 64, 1405 (1991).

    Article  Google Scholar 

  19. 19.

    J. Aue and J. Th. M. De Hosson, Appl. Phys. Lett. 71, 1347 (1997).

    CAS  Article  Google Scholar 

  20. 20.

    F. Biscarini, P. Samori, A. Lauria, P. Ostoja, R. Zamboni, C. Taliani, P. Viville, R. Lazzaroni, and J. L. Bredas, Thin Sol. Films 284-285, 439 (1996).

    CAS  Article  Google Scholar 

  21. 21.

    G. Palsantzas, Z. P. Zhao, G. -C. Wang, T. -M. Lu, J. Barnas, and J. Th. M. De Hosson, Phys. Rev. B 61, 11109 (2000).

    Article  Google Scholar 

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Tsamouras, D., Palasantzas, G., De Hosson, J.T.M. et al. Growth Front Roughening of Room Temperature Deposited Oligomer Thin Films. MRS Online Proceedings Library 648, 620 (2000).

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