Ion Beam Deposition Technique for Fabricating Luminescent Thin Films from a Solution of Nanocrystalline Semiconductor Dots
- 20 April 2007
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 46 (5L) , L392-395
- https://doi.org/10.1143/jjap.46.l392
Abstract
We report a new technique for fabricating organic-free luminescent thin films from solution-synthesized surfactant-capped nanocrystalline semiconductor quantum dots with a core/shell structure. Colloidal solutions of CdSe/ZnS nanocrystals with diameters of 2.1 to 5.1 nm were made into ion beams and deposited on polycrystalline substrates under high vacuum; we applied the ion beam direct deposition technique with an electrospray ionizer, supersonic jet emitter, and energy analyzer. The nanocrystalline structure was preserved in the thin films; the photoluminescence spectra were identical to those of the source solution, although the thin films were essentially surfactant- and solvent-free.Keywords
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