Numerical Analysis of Roles of Depletion Layer Width in Semiconductor Gas Sensor Using the Gradient-Distributed Oxygen Vacancy Model
Journal Title: Materials Science-Medžiagotyra - Year 2019, Vol 25, Issue 1
Abstract
The roles of depletion layer width in semiconductor gas sensors are quantitatively discussed based on the model of gradient-distributed oxygen vacancies. Several literatures are employed to provide experimental basis of the relationship between depletion layer width and gas sensing characteristics of semiconductor devices. Four series of gas sensors are illustrated and their depletion layer widths are controlled by three different techniques, such as controlling of the dopant amount, sintering in various procedures and usage of various dopants. The model shows a good applicability in analyzing the roles of the depletion layer width in semiconductor gas sensors, as long as the grain radius is larger than the depletion layer width, especially when it is controlled by the doping amount of the foreign elements.
Authors and Affiliations
Jianqiao LIU, Wencong GENG, Guohua JIN, Zhaoxia ZHAI
Keywords
Related Articles
- EP ID EP452511
- DOI 10.5755/j01.ms.25.1.19129
- Views 23
- Downloads 0
Electrochemical Comparative Characteristics of La(Fe,Si)13 Type Materials with Different Content of Co in Acidified Phosphate Environment in Presence of Cl- Ions
In the paper the electrochemical characteristics of alloys based on La(Fe,Si)13 phase have been presented. The material for research was the LaFe11.8-xCoxSi1.2 alloy with different cobalt content. Presented electrochemic...
Effect of Annealing Temperature on Structural, Morphological, Optical and Electrical Properties of Spray Deposited V2O5 Thin Films
Nanostructured vanadium pentoxide (V2O5) thin films have been deposited by a simple and cost-effective spray pyrolysis technique (SPT) at substrate temperature 300 °C and post annealed at atmospheric conditions in the te...
Comparison of Single/Compound Plasticizer to Prepare Thermoplastic Starch in Starch-Based Packaging Composites
There is a recrystallization problem with natural corn starch, the major raw material of new bio-degradable starch-based composites. To improve the adhesive properties between the starch and the fibers in composites, thi...
Improvement of the Hydrogen-Storage Properties of Mg by Adding a Polymer CMC via Transformation-Involving Milling
The addition of CMC (Carboxymethylcellulose, Sodium Salt) may improve the hydrogen uptake-release properties of Mg since it has a relatively low melting point and the melting of CMC during transformation-involving millin...
Defects Promoted Topotactic Transformation from Co(OH)2 Nanodiscs to Co3O4 Nano Octahedra
Topotactic transformation was one of the most frequently related processes in the synthesis process of cobalt oxide nanomaterials. Microstructural evolution studies of this process inform and enable the process of contro...