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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15929

Title: Relation between synthesis conditions, dopant position and charge carriers in aluminium-doped ZnO nanoparticles
Authors: KELCHTERMANS, Anke
ELEN, Ken
SCHELLENS, Kevin
CONINGS, Bert
DAMM, Hanne
BOYEN, Hans-Gerhard
D'Haen, Jan
ADRIAENSENS, Peter
HARDY, An
VAN BAEL, Marlies
Issue Date: 2013
Citation: RSC Advances, 3 (35), p. 15254-15262
Abstract: The ability to achieve an understanding of the correlations between chemical synthesis, doping mechanism and properties of aluminium-doped zinc oxide (ZnO:Al) nanocrystals is of great importance to evaluate the potential of ZnO:Al nanocrystals as optimal building blocks for solution deposited transparent conductive oxide layers. Two series of Al-doped ZnO nanoparticles were synthesized by solution-based methods under different conditions yielding phase-pure wurtzite ZnO:Al nanocrystals with different morphologies (quasispheres and rods). In both series 80% of the input Al is incorporated in the ZnO:Al crystals. Furthermore, 27Al nuclear magnetic resonance demonstrated a 5 times higher tetrahedral Al content for the quasispheres, which can be directly linked to the presence of free charge carriers, as showed with Fourier transform infrared spectroscopy. XPS data show the Zn2+ and O22 chemical state of the constituting ions. It is demonstrated that an efficient Al doping, creating charge carriers in the ZnO, can be achieved by controlling the chemical synthesis parameters of the nanoparticles
URI: http://hdl.handle.net/1942/15929
DOI: 10.1039/C3RA41847B
ISI #: 000323132100049
ISSN: 2046-2069
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

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