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Matrix assisted pulsed laser deposition of light emitting polymer thin films

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Abstract

Matrix assisted laser processing allows for the deposition of functional and fragile materials with a minimum of breakdown and decomposition. In this communication we report on light emitting thin films of ruthenium tris(bipyridine)-centered star-shaped poly(methyl methacrylate), Ru(bpyPMMA2)3(PF6)2, grown by matrix assisted pulsed laser deposition. A pulsed excimer laser (KrF) operating at 248 nm was used for all experiments. Due to the absorption at 248 nm and the solubility characteristics of [Ru(bpyPMMA2)3](PF6)2, dimethoxy-ethane (DME) was used as a solvent [1]. Dilute solutions (2 wt. %) of [Ru(bpyPMMA2)3](PF6)2 and DME were flash frozen in liquid nitrogen producing a solid target. Thin films ranging from 20 to 100 nm were grown on Si in an Ar atmosphere at 200 mTorr at a laser fluence of 0.04 J/cm2. The deposited materials were characterized by proton nuclear magnetic resonance (1H NMR) and gel permeation chromatography (GPC) equipped with refractive index (RI), and ultraviolet/visible (UV/vis) detection.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA, 22904, USA

    J.M. Fitz-Gerald & G. Jennings

  2. Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, USA

    R. Johnson & C.L. Fraser

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  1. J.M. Fitz-Gerald
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  2. G. Jennings
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  3. R. Johnson
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  4. C.L. Fraser
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Correspondence to J.M. Fitz-Gerald.

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PACS

81.15.Fg; 79.20.Ds; 78.66.Qn; 42.70.Jk

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Fitz-Gerald, J., Jennings, G., Johnson, R. et al. Matrix assisted pulsed laser deposition of light emitting polymer thin films. Appl. Phys. A 80, 1109–1112 (2005). https://doi.org/10.1007/s00339-003-2392-1

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  • DOI: https://doi.org/10.1007/s00339-003-2392-1

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