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Patterned Deposition from Compressed Carbon Dioxide

Published online by Cambridge University Press:  11 February 2011

C. K. Luscombe,
W. T. S. Huck,
A. B. Holmes,
T. Lu,
G. A. Leeke,
R. C. D. Santos,
B. Al-Duri and
J. P. K. Seville
C. K. Luscombe
Affiliation:
Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
W. T. S. Huck
Affiliation:
Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
A. B. Holmes
Affiliation:
Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
T. Lu
Affiliation:
Supercritical Fluid Technology Group, Centre for Formulation Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
G. A. Leeke
Affiliation:
Supercritical Fluid Technology Group, Centre for Formulation Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
R. C. D. Santos
Affiliation:
Supercritical Fluid Technology Group, Centre for Formulation Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
B. Al-Duri
Affiliation:
Supercritical Fluid Technology Group, Centre for Formulation Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
J. P. K. Seville
Affiliation:
Supercritical Fluid Technology Group, Centre for Formulation Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
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Abstract

Compressed CO2 is employed as the solvent for the deposition of polymers onto patterned surfaces created by a lithographic technique. This deposition technique should have wide applicability in the deposition of organic and polymeric materials for optoelectronic devices. The advantage of controlled deposition confers a further benefit in the control of the patterned surface. In a specific example a perfluorinated polymer was dissolved in liquid carbon dioxide. The polymer solution was deposited by use of a nozzle onto a pre-patterned surface. The resulting polymer film showed a clear image of the original pattern as measured by optical microscopy.

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References

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