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Investigations on the crystal growth mechanism of one-pot-synthesized Al-doped ZnO and its UV-enhanced room temperature NO2 gas sensing characteristics

Title data

Vogel, Leah ; Wagner, Ricarda ; Moos, Ralf ; Schönauer-Kamin, Daniela:
Investigations on the crystal growth mechanism of one-pot-synthesized Al-doped ZnO and its UV-enhanced room temperature NO2 gas sensing characteristics.
In: Functional Materials Letters. Vol. 11 (2018) Issue 4 . - Art.Nr. 1850087.
ISSN 1793-7213
DOI: https://doi.org/10.1142/S179360471850087X

Abstract in another language

Sol–gel synthesis is a well-known method to synthesize metal oxides such as ZnO in a facile way. Different crystal morphologies of Al-doped ZnO were obtained by tuning the pH for the synthesis. Additionally, the influence of the morphology on the sensing properties of ZnO-based resistive gas sensors was investigated by producing sensor films which were exposed to low NO2 concentrations. The results show a high and fast sensor response with a high aspect ratio of the crystal. Furthermore, a possible crystal forming mechanism was postulated. Thus, it can be assumed that the type of Zn2+ influences the crystal form. Ethanol amine can cause a capping of certain crystal planes and enhance the growth along one axis.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 17 Sep 2018 10:43
Last Modified: 17 Sep 2018 10:43
URI: https://eref.uni-bayreuth.de/id/eprint/45807