Quantum dots confined in nanoporous alumina membranes

Jun Xu, Jianfeng Xia, Jun Wang, Joseph Shinar, Zhiqun Lin

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CdSe/ZnS core/shell quantum dots (QDs) were filled into porous alumina membranes (PAMs) by dip coating. The deposition of QDs induced changes in the refractive index of the PAMs. The amount of absorbed QDs was quantified by fitting the reflection and transmission spectra observed experimentally with one side open and freestanding (i.e., with two sides open) PAMs employed, respectively. The fluorescence of the QDs was found to be retained within the cylindrical nanopores of the PAMs.

Original languageEnglish
Article number133110
JournalApplied Physics Letters
Issue number13
StatePublished - 2006

Bibliographical note

Funding Information:
One of the authors (J.X.) thanks the Institute for Physical Research and Technology of Iowa State University for a Catron graduate research fellowship. This work was supported by the DOE Ames Laboratory seed funding (Z.L.), the NSF-NIRT-0506832 (Z.L.), the 3 M Nontenured Faculty Award (Z.L.), and the DOE under Contract No. W-7405-ENG-82 (J.S.). The authors also thank Vladimir Tsukruk for helpful discussions.


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