scholarly journals Electrodeposited Copolymer Films with Tunable Conductivity

Electrochem ◽  
2020 ◽  
Vol 1 (4) ◽  
pp. 358-366
Author(s):  
Claire Magnenet ◽  
Emmanuel Contal ◽  
Sophie Lakard ◽  
Sandrine Monney ◽  
Boris Lakard
Keyword(s):  
Thin Films ◽  
Electrochemical Oxidation ◽  
Gas Sensors ◽  
Lithium Perchlorate ◽  
Granular Structure ◽  
Sensitive Material ◽  
Copolymer Films

Conducting copolymer films were prepared from pyrrole (Py) and 1,12-di-(1-pyrrolyl) dodecane (DiPy) in an attempt to prepare conducting films that can be used as sensitive material of chemiresistor gas sensors. Copolymer thin films were obtained by electrochemical oxidation in a lithium perchlorate/acetonitrile electrolyte with different feed ratios of comonomers. Increasing the portion of DiPy in the comonomer mixture resulted in the formation of thinner and less rough copolymer films and to a modification of their morphology from a granular structure to a clover-like structure. In addition, copolymer films with very different conductivities were obtained by varying the comonomers ratio. Indeed, the conductivity of the copolymer containing 91% of Py was 2 × 105 times higher than the conductivity of the polymer containing 91% of DiPy, indicating that it is possible to tune the conductivity of the film by varying the composition of the initial comonomer mixture.

scholarly journals On the Use of MOFs and ALD Layers as Nanomembranes for the Enhancement of Gas Sensors Selectivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1552 ◽  
Author(s):  
Weber ◽  
Graniel ◽  
Balme ◽  
Miele ◽  
Bechelany
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Atomic Layer ◽  
Operational Performance ◽  
Layer Deposition ◽  
Metal Organic ◽  
Further Development ◽  
Different Gases

Improving the selectivity of gas sensors is crucial for their further development. One effective route to enhance this key property of sensors is the use of selective nanomembrane materials. This work aims to present how metal-organic frameworks (MOFs) and thin films prepared by atomic layer deposition (ALD) can be applied as nanomembranes to separate different gases, and hence improve the selectivity of gas sensing devices. First, the fundamentals of the mechanisms and configuration of gas sensors will be given. A selected list of studies will then be presented to illustrate how MOFs and ALD materials can be implemented as nanomembranes and how they can be implemented to improve the operational performance of gas sensing devices. This review comprehensively shows the benefits of these novel selective nanomaterials and opens prospects for the sensing community.

Gas sensors on Ga2O3-In2O3 thin films

2012 ◽  
Author(s):  
A.G. Kozlov ◽  
O.V. Krivozubov ◽  
E.A. Kurdukova ◽  
M.N. Lila
Keyword(s):  
Thin Films ◽  
Gas Sensors

scholarly journals Nanostructured Pr-doped Ceria (PCO) thin films as sensing electrodes in solid-electrolyte type gas sensors with enhanced toluene sensitivity

2020 ◽  
Vol 317 ◽  
pp. 128037 ◽  
Author(s):  
Taro Ueda ◽  
Thomas Defferriere ◽  
Takeo Hyodo ◽  
Yasuhiro Shimizu ◽  
Harry L. Tuller
Keyword(s):  
Thin Films ◽  
Solid Electrolyte ◽  
Gas Sensors ◽  
Doped Ceria

Semiconducting Nano-structured SmFeO3-based Thin Films Prepared by Novel Sol-gel Method for Acetone Gas Sensors

2014 ◽  
Vol 152 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Ying Zhang ◽  
Qian-Qian Jia ◽  
Hui-Ming Ji ◽  
Jian-Jun Yu
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Polypyrrole thin films gas sensors

2001 ◽  
Vol 119 (1-3) ◽  
pp. 383-384 ◽  
Author(s):  
J.E.G. de Souza ◽  
F.L. dos Santos ◽  
B. Barros-Neto ◽  
C.G. dos Santos ◽  
C.P. de Melo
Keyword(s):  
Thin Films ◽  
Gas Sensors

Titanium Dioxide Thin Films as Methane Gas Sensors

2016 ◽  
Vol 16 (24) ◽  
pp. 8890-8896 ◽  
Author(s):  
Buse Comert ◽  
Nihan Akin ◽  
Meltem Donmez ◽  
Semran Saglam ◽  
Suleyman Ozcelik
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Gas Sensors ◽  
Methane Gas ◽  
Titanium Dioxide Thin Films

Reactively sputtered indium tin oxide polycrystalline thin films as NO and NO2 gas sensors

1990 ◽  
Vol 186 (2) ◽  
pp. 349-360 ◽  
Author(s):  
G. Sberveglieri ◽  
P. Benussi ◽  
G. Coccoli ◽  
S. Groppelli ◽  
P. Nelli
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Polycrystalline Thin Films ◽  
No2 Gas Sensors

Epitaxial growth of β-Ga2O3 (-201) thin film on fourfold symmetry CeO2 (001) substrate for heterogeneous integrations

2021 ◽  
Author(s):  
Xiao Tang ◽  
Kuanghui Li ◽  
Che-Hao Liao ◽  
Dongxing Zheng ◽  
chen Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Epitaxial Growth ◽  
Gas Sensors ◽  
High Power ◽  
Wide Bandgap ◽  
Semiconductor Material ◽  
Uv Detectors ◽  
Wide Bandgap Semiconductor ◽  
Fourfold Symmetry

β-Ga2O3 is a wide bandgap semiconductor material promising for many fields such as gas sensors, UV detectors, and high power electronics. Until now, most epitaxial β-Ga2O3 thin films could only...

scholarly journals A tunable volatile organic compound sensor by using PtOx/GQDs/TiO2 nanocomposite thin films at room temperature under visible-light activation

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 39859-39868 ◽  
Author(s):  
Shaofeng Shao ◽  
Yunyun Chen ◽  
Shenbei Huang ◽  
Fan Jiang ◽  
Yunfei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Visible Light ◽  
Gas Sensors ◽  
Room Temperature ◽  
Light Activation ◽  
Nanocomposite Thin Film ◽  
Nanocomposite Thin Films ◽  
Volatile Organic ◽  
Visible Light Activation

Pt/GQDs/TiO2 nanocomposite thin film-based gas sensors show tunable VOC sensing behaviour at room temperature under visible-light activation.

Undoped and Pd-doped SnO2 thin films for gas sensors

1993 ◽  
Vol 16 (1-3) ◽  
pp. 357-362 ◽  
Author(s):  
B. Gautheron ◽  
M. Labeau ◽  
G. Delabouglise ◽  
U. Schmatz
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Sno2 Thin Films
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