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Title: Morphological tuning, self-assembly and optical properties of indium oxide nanocrystals
Authors: Ye, E.
Zhang, S.-Y.
Hon Lim, S.
Liu, S. 
Han, M.-Y. 
Issue Date: 14-Oct-2010
Citation: Ye, E., Zhang, S.-Y., Hon Lim, S., Liu, S., Han, M.-Y. (2010-10-14). Morphological tuning, self-assembly and optical properties of indium oxide nanocrystals. Physical Chemistry Chemical Physics 12 (38) : 11923-11929. ScholarBank@NUS Repository.
Abstract: In this paper, weak acids, weak bases or their mixtures were used as reaction media/coordinating ligands to achieve systematic morphological control over amphoteric indium oxide nanostructures. Different indium/oleic acid molar ratios from 1:0, 1:1, 1:2, 1:3, 1:6 and 1:15 in non-coordinating, weakly coordinating, strongly coordinating and their mixed media were adopted to prepare irregular aggregated nanoparticles and uniform regular/truncated octahedra, etc. In addition to their strong size-dependent absorption, single-crystalline indium oxide octahedra also gave a strong band-edge emission while irregular indium oxide aggregated nanoparticles only exhibited a weak deep-trap emission. Meanwhile, the truncated octahedra were self-assembled into either zigzag lines or pentagram patterns, and the regular octahedra and truncated cubes were self-assembled into hexagonally packed nanocrystal arrays. In addition, the formation mechanism of the various nanostructures under different conditions was investigated in detail. © 2010 the Owner Societies.
Source Title: Physical Chemistry Chemical Physics
ISSN: 14639076
DOI: 10.1039/c0cp00138d
Appears in Collections:Staff Publications

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