Stepwise assembly of europium sesquioxide nanocrystals and nanoneedles

Sameer V. Mahajan; Marcela L. Redígolo; Dmitry S. Koktysh; James H. Dickerson

doi:10.1117/12.683517

14 September 2006 Stepwise assembly of europium sesquioxide nanocrystals and nanoneedles

Sameer V. Mahajan, Marcela L. Redígolo, Dmitry S. Koktysh, James H. Dickerson

Proceedings Volume 6321, Nanophotonic Materials III; 632102 (2006) https://doi.org/10.1117/12.683517
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

The stepwise self-assembly of europium sesquioxide nanocrystals into larger, anisotropic europium hydroxychloride nanostructures is observed. This involves the thermally assisted growth of 4.0 nm nanocrystals into elongated structures, called nanoneedles, and the subsequent assembly of those nanoneedles into larger, oriented bundles, called nanospindles. High-resolution transmission electron microscopy provides the size distribution, shape and atomic spacing of the nanostructures, whereas selective area electron diffraction and x-ray diffraction measurements identify their crystallinity. The optical properties, attributed to the environment of the host lattice for the europium ions, are investigated through photoluminescence measurements.

Citation Download Citation

Sameer V. Mahajan, Marcela L. Redígolo, Dmitry S. Koktysh, and James H. Dickerson "Stepwise assembly of europium sesquioxide nanocrystals and nanoneedles", Proc. SPIE 6321, Nanophotonic Materials III, 632102 (14 September 2006); https://doi.org/10.1117/12.683517

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