期刊
MATERIALS LETTERS
卷 174, 期 -, 页码 28-31出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.01.122
关键词
Graphene oxide (GO); Zinc oxide (ZnO); Nanoparticles; Layered thin film; Quartz crystal microbalance (QCM); Sensors
资金
- National Science Funds for Creative Research Groups of China [61421002]
- Program for New Century Excellent Talents in University [NCET-13-0096]
- Open Foundation of State Key Laboratory of Electronic Thin Films and Integrated Devices [KFJJ201413]
In this letter, a novel graphene oxide (GO, top layer)/zinc oxide nanoparticles (ZnO, bottom layer) layered thin film was sprayed on quartz crystal microbalance (QCM) for humidity detection within the range of 11.3% RH and 97.3% RH. A remarkable enhancement in sensitivity (41.10 Hz/%RH) of GO/ZnO sensor was achieved, compared with that of ZnO/GO sensor (25.11 Hz/%RH) and single film sensors (8.85 Hz/%RH for ZnO and 16.67 Hz/%RH for GO). Meanwhile, the resultant GO/ZnO sensor also exhibited rapid response/recovery rates (less than 9 s/5 s @63.2%) and stable repeatability. Based on morphological and structural analyses, it was speculated that the superior humidity-sensing properties of GO/ZnO sensor might be ascribed to the supporting role of ZnO layer, the smallest nanoparticles aggregation size and the higher mechanical modules. (C) 2016 Elsevier B.V. All rights reserved.
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