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Main Title: Li-doped ZnO nanorods with single-crystal quality - non-classical crystallization and self-assembly into mesoporous materials
Author(s): Lizandara-Pueyo, Carlos
Dilger, Stefan
Wagner, Markus R.
Gerigk, Melanie
Hoffmann, Axel
Polarz, Sebastian
Type: Article
Language Code: en
Abstract: The benefits and promise of nanoscale dimensions for the properties of (ceramic) semiconductors are widely known. 1-D nanostructures in particular have proven to be of extraordinary relevance due to their applicability in future electronic and optoelectronic devices. Key to successful technological implementation of semiconductor nanostructures is the control of their electronic properties via doping. Despite its tremendous importance, precise chemical doping of defined nano-objects has been addressed rarely so far. Frequent problems are the creation of secondary defects and related undesired property changes by incorporation of hetero-elements, and the difficulty in ensuring a uniform and precise positioning of the dopant in the nanocrystal lattice. Here, we present the synthesis of Li-doped zinc oxide nanorods, which possess excellent (single-crystal) quality. The method is based on a novel non-classical crystallization mechanism, comprising an unusually oriented disassembly step. Afterwards, the nanorods are incorporated into mesoporous layers using colloidal self-assembly. Proof-of-principle gas sensing measurements with these novel materials demonstrate the beneficial role of Li-doping, indicating not only better conductivity but also the occurrence of catalytic effects.
Issue Date: 2014
Date Available: 23-Jun-2016
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Journal Title: CrystEngComm
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 16
Issue: 8
Publisher DOI: 10.1039/c3ce41670d
Page Start: 1525
Page End: 1531
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Festkörperphysik » Publications

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