UV-enhanced NO2 gas sensing properties of polystyrene sulfonate functionalized ZnO nanowires at room temperature

2019 ◽  
Vol 6 (1) ◽  
pp. 176-183 ◽  
Author(s):  
Jing Wang ◽  
Mingying Yu ◽  
Xian Li ◽  
Yi Xia
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Polystyrene Sulfonate ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Highly Sensitive ◽  
Gas Sensing Properties

PSS-functionalized ZnO nanowires exhibited a highly sensitive, fast, reversible and stable optoelectronic response to NO2 under UV illumination.

H2, H2S gas sensing properties of rGO/GaN nanorods at room temperature: Effect of UV illumination

2018 ◽  
Vol 264 ◽  
pp. 353-362 ◽  
Author(s):  
Maddaka Reddeppa ◽  
Byung-Guon Park ◽  
Moon-Deock Kim ◽  
Koteswara Rao Peta ◽  
Nguyen Duc Chinh ◽  
...  
Keyword(s):  
Temperature Effect ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Gas Sensing Properties

scholarly journals Defect-Induced Gas-Sensing Properties of a Flexible SnS Sensor under UV Illumination at Room Temperature

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5701
Author(s):  
Nguyen Manh Hung ◽  
Chuong V. Nguyen ◽  
Vinaya Kumar Arepalli ◽  
Jeha Kim ◽  
Nguyen Duc Chinh ◽  
...  
Keyword(s):  
Density Functional ◽  
Room Temperature ◽  
Surface Defects ◽  
Gas Sensing ◽  
Theoretical Calculations ◽  
Tin Sulfide ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Gas Sensing Properties ◽  
Key Factor

Tin sulfide (SnS) is known for its effective gas-detecting ability at low temperatures. However, the development of a portable and flexible SnS sensor is hindered by its high resistance, low response, and long recovery time. Like other chalcogenides, the electronic and gas-sensing properties of SnS strongly depend on its surface defects. Therefore, understanding the effects of its surface defects on its electronic and gas-sensing properties is a key factor in developing low-temperature SnS gas sensors. Herein, using thin SnS films annealed at different temperatures, we demonstrate that SnS exhibits n-type semiconducting behavior upon the appearance of S vacancies. Furthermore, the presence of S vacancies imparts the n-type SnS sensor with better sensing performance under UV illumination at room temperature (25 °C) than that of a p-type SnS sensor. These results are thoroughly investigated using various experimental analysis techniques and theoretical calculations using density functional theory. In addition, n-type SnS deposited on a polyimide substrate can be used to fabricate high-stability flexible sensors, which can be further developed for real applications.

scholarly journals GAS SENSING PROPERTIES OF NANOJUNCTION OF NETWORKED ZnO NANOWIRES UNDER THE CORRELATION BETWEEN OPERATING TEMPERATURE AND UV RADIATION

2021 ◽  
Vol 31 (3) ◽  
Author(s):  
Hieu Van Van Nguyen
Keyword(s):  
Uv Radiation ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Energy Dispersive Spectrum ◽  
Systematic Investigation ◽  
Zno Nanowires ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Gas Sensing Properties ◽  
Operating Temperatures

The networked ZnO nanowires (NWs) are synthesized by thermal evaporation at 900 oC, using a mixture of ZnO and graphite. The morphology, crystalline structure, and chemical composition of the NWs are evaluated by field-emission scanning electron microscopy, X-ray diffraction, and energy-dispersive spectrum. The NO2 gas-sensing properties of a networked ZnO NWs-based sensor are considered in a correlation between the operating temperature and UV radiation with various operating temperatures as well as UV intensities. The results reveal that the sensing properties of the UV-illuminated sensor measured at room temperature are comparable to those of the heated sensor. The results also indicate that the UV intensity affects strongly both the response and the sensing kinetic of the sensor at all operating temperatures. Furthermore, based on a systematic investigation of the sensing performance of the sensor under both UV illumination and thermal activation, a model to explain the role of UV illumination is also proposed.

Gas-Sensing Properties of ZnO Nanorods at Room Temperature Under Continuous UV Illumination in Humid Air

2016 ◽  
Vol 16 (10) ◽  
pp. 10346-10350 ◽  
Author(s):  
Nguyen Minh Vuong ◽  
Nguyen Duc Chinh ◽  
Truong Thi Hien ◽  
Nguyen Duc Quang ◽  
Dahye Kim ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanorods ◽  
Humid Air ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Gas Sensing Properties

scholarly journals Gold and ZnO-Based Metal-Semiconductor Network for Highly Sensitive Room-Temperature Gas Sensing

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3815
Author(s):  
Renyun Zhang ◽  
Magnus Hummelgård ◽  
Joel Ljunggren ◽  
Håkan Olin
Keyword(s):  
Solar Cells ◽  
Gas Sensor ◽  
Network Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Gold Particles ◽  
Highly Sensitive ◽  
Semiconductor Electronics ◽  
New Type

Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au–ZnO-based metal-semiconductor (M-S)n network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S)n network. The (M-S)n network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S)n network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.

Effects of rare earth elements doping on gas sensing properties of ZnO nanowires

2021 ◽  
Author(s):  
Sikai Zhao ◽  
Yanbai Shen ◽  
Ang Li ◽  
Yunshuang Chen ◽  
Shuling Gao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Sensing Properties ◽  
Gas Sensing Properties

A facile microwave synthesis of rGO, ZrO2 and rGO–ZrO2 nanocomposite and their room temperature gas sensing properties

2019 ◽  
Vol 30 (18) ◽  
pp. 17094-17105
Author(s):  
Akshay Krishnakumar ◽  
Parthasarathy Srinivasan ◽  
Arockia Jayalatha Kulandaisamy ◽  
K. Jayanth Babu ◽  
John Bosco Balaguru Rayappan
Keyword(s):  
Microwave Synthesis ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties

Optimization and gas sensing properties of Au nanoparticle modified α-Fe2O3 nanodisk structures for highly sensitive acetone detection

2020 ◽  
Vol 44 (37) ◽  
pp. 16174-16184
Author(s):  
Haoyue Yang ◽  
Rui Zhou ◽  
Yongjiao Sun ◽  
Pengwei Li ◽  
Wendong Zhang ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Hydrothermal Method ◽  
Gas Sensing ◽  
Au Nanoparticle ◽  
Facile Hydrothermal Method ◽  
Sensing Properties ◽  
Highly Sensitive ◽  
Gas Sensing Properties ◽  
Acetone Detection

Au nanoparticle (Au NP) modified α-Fe2O3 nanodisk structures are obtained using a facile hydrothermal method and annealing based surface treatment.

Two-dimensional NiO nanosheets with enhanced room temperature NO2sensing performance via Al doping

2017 ◽  
Vol 19 (29) ◽  
pp. 19043-19049 ◽  
Author(s):  
Shuai Wang ◽  
Da Huang ◽  
Shusheng Xu ◽  
Wenkai Jiang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Two Dimensional ◽  
Al Doping ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Nio Nanosheets

Defects caused by Al3+doping significantly affect the gas-sensing properties of NiO nanosheets.

Sign in / Sign up

Export Citation Format

Share Document