Fabrication of nanocubic ZnO/SnO2 film-based humidity sensor with high sensitivity by ultrasonic-assisted solution growth method at different Zn:Sn precursor ratios
Year: 2013
Type: article
Abstract: We fabricated humidity sensor using nanocubic ZnO/SnO 2 prepared via sol–gel and immersion method deposited on sputtered ZnO-film-coated glass substrate. These combination methods were used to grow nanocubic structured ZnO/SnO 2 at different molar ratios Zn:Sn for the first time. The experiment was conducted at difference molar ratio of Zn:Sn by varying the molar of Zn. The size of the cube reduces as the Zn molar increase. The luminescence of nanocubic structured ZnO/SnO 2 was indicated around 400 and 600 nm corresponding to the ultra-violet (UV) emission and visible emission, respectively. The composition of molar ratio 10:10 of nanocubic structured ZnO/SnO 2 gives the best sensitivity of 104 times for humidity sensor properties. Nanocubic structured ZnO/SnO 2 have a great potential for humidity sensor application with high response (411 s) and recovery times (98 s), repeatability and good in stability.
Source: Applied Nanoscience
Authors: N. D. Md Sin, M. H. Mamat, M. F. Malek, M. Rusop
Institutions: Universiti Teknologi MARA System, Universiti Teknologi MARA
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,490
OpenAlex ID: W1992740000