Quantum Dot Thin Layers Templated on ZnO Inverse Opals


  • This work was partially funded by the Spanish Ministry of Science and Education under contract MAT2003-01237 and NAN2004-08843, the EU under contract IST-511616 NoE PhOREMOST and the EU Project STABILIGHT.


A novel composite material integrating ZnO and semiconductor colloidal quantum dots (QDs) in a photonic crystal (see figure) is fabricated by accurate infiltration in two hierarchical steps of colloidal self-assembly. The presence of a high-energy photonic gap has a strong effect on the QD spontaneous emission. A further progressive infiltration with more ZnO is useful to tune this photonic effect through the photoluminescence emission spectrum.

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