Using a Layer-by-Layer Assembly Technique to Fabricate Multicolored-Light-Emitting Films of CdSe@CdS and CdTe Quantum Dots


  • This work was supported by the National Science Council of Taiwan under contract number NSC94-2113-M-002-008. We thank the Center for Information and Electronic Technologies at National Taiwan University for allowing us to conduct the AFM measurements and perform the photolithographic patterning of the QD films. Supporting Information is available online from Wiley InterScience or from the author.


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The tunability of the colors and emissions of quantum-dot (QD) films—by controlling the deposition order and number of bilayers in (PDDA–CdSe@CdS)n and (PDDA–CdTe)n films (PDDA: poly(diallyldimethylammonium chloride))—is demonstrated. The photograph shows QD microstructures that exhibit different emission colors on a gold nanoparticle (AuNP)-treated indium tin oxide substrate, fabricated by combining layer-by-layer assembly with photolithography.