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  4. Low-temperature vapor-solid growth of ZnO nanowhiskers for electron field emission
 
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Low-temperature vapor-solid growth of ZnO nanowhiskers for electron field emission

Citation Link: https://doi.org/10.15480/882.2451
Publikationstyp
Journal Article
Date Issued
2019-10-25
Sprache
English
Author(s)
Hedrich, Carina  
Haugg, Stefanie  
Pacarizi, Leutrim  
Furlan, Kaline P.  orcid-logo
Blick, Robert H.  
Zierold, Robert  
Institut
Keramische Hochleistungswerkstoffe M-9  
TORE-DOI
10.15480/882.2451
TORE-URI
http://hdl.handle.net/11420/3656
Journal
Coatings  
Volume
9
Issue
11
Article Number
698
Citation
Coatings 9 (11): 698 (2019)
Publisher DOI
10.3390/coatings9110698
Scopus ID
2-s2.0-85075563382
Publisher
Multidisciplinary Digital Publishing Institute
One-dimensional zinc oxide nanostructures have aroused interest from scientists and engineers for electron field emission applications because of their experimentally accessible high aspect ratio in combination with their low work function. A comprehensive study of the vapor-solid growth of zinc oxide (ZnO) nanowhiskers by utilizing zinc acetylacetonate hydrate and oxygen at low temperature (580 °C) is reported herein. The nanowhiskers morphology was investigated by varying different growth parameters, such as temperature, substrate type and position, gas flow, precursor amount, and growth time. According to the obtained parameter dependences, the process was optimized to achieve homogenous crystalline nanowhiskers with high aspect ratios and clearly defined surface facets and tips. We show electron field emission measurements from tailor-made ZnO nanowhiskers grown on n-doped silicon, titanium thin films, and free-standing silicon nitride membranes, revealing field emission turn-on fields significantly lower compared to a perfect flat ZnO thin film. Especially the latter devices - ZnO nanowhiskers on a free-standing membrane - might pave the way into a novel nanomembrane detector unit in proteomics, which can significantly extend the mass range of current time-of-flight mass spectrometers.
DDC Class
540: Chemie
600: Technik
620: Ingenieurwissenschaften
Lizenz
https://creativecommons.org/licenses/by/4.0/
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