Design and evaluation of polymer matrices for the encapsulation of CdSe/ZnS quantum dots in photonic nanocomposite thin films

作者：Vasileiadis Miltiadis^*; Koutselas Ioannis; Pispas Stergios; Vainos Nikolaos A

来源：Journal of Polymer Science Part B: Polymer Physics , 2016, 54(5): 552-560.

DOI：10.1002/polb.23921

• quantum dots
• thin films
• luminescence
• acrylic polymers
• nanocomposites

A systematic approach and a new scheme for the evaluation of the as-is encapsulation of CdSe/ZnS core/shell quantum dots into polymer matrices is proposed, aiming to the implementation of thin film photonic integrated structures. Work focuses on quantum dots capped by hexadecylamine and trioctylphosphine oxide with no ligand exchange or other intermediate processing steps involved. The polymers studied include poly(methyl-methacrylate) (PMMA), polystyrene and acrylic polymers incorporating long alkyl chains, which are expected to promote the compatibility of the quantum dot ligands to that of the polymer chains. In this approach, the variation of photoluminescence properties of the nanocomposite thin films is measured versus increased concentration of the quantum dots, so as to evaluate the suitability of each polymer structure as an efficient host. Furthermore, the refractive index of the quantum dots/polymer nanocomposite thin films are also estimated using white light reflectance spectroscopy data, as appropriate for the integration of photonic devices.

• 出版日期2016-3-1