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Laser Assisted Coating of Organic Film

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Abstract

Thin film of Alq3 was coated on the light-to-heat conversion (LHC) layer. The Alq3 coated light to heat conversion layer was closely contacted with the substrate. When the laser was incident on the LHC layer, heat was generated and, due to the heat, LHC layer was expanded and the Alq3 film was transferred to the substrate. When the laser has Gaussian spatial profile, the profile of printed organic material becomes non-uniform. We tried several laser beam profile shaping methods to get a clean and sharp printing. The dependences of eliminated organic material profile from donor plate on the laser power, beam shaping method, and the layer thickness were investigated.

© 2011 Optical Society of America

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