Microstructure optimization and gas sensing improvement of ZnO spherical structure through yttrium doping

The influence of Y contribution on crystallographic, topographic and optical properties of ZnO: A heterojunction diode application

“…Thus, yttrium doping will theoretically enhance electrical and optical properties of ZnO. Because, in the earlier studies, it has been found that Y doping enhanced UV emission (optical properties) [1,12,[18][19][20][21][22], electrical conductivity [18,19,23], gas sensor characteristics [14,20] and ferromagnetism property of ZnO [15], the more studies about investigation of Y doping effect on the features of zinc oxide structure should be made in order to fabricate more effective ZnO semiconductor materials.…”

Assembly with copper(ii) ions and D–π–A molecules on a graphene surface for ultra-fast acetic acid sensing at room temperature

“…The absorbed molecules then captured electrons from the conduction band of the graphene sheets to create an electron depletion layer (O 2 À or O À ). 45,46 When transferred into acetic acid, the acetic acid molecules were oxidized by the oxygen species and the electrons captured by oxygen were thereby released to the conduction band of the graphene sheets, 47,48 resulting in a lower resistance state for the sensor.…”

Highly sensitive acetic acid gas sensor based on coral-like and Y-doped SnO2 nanoparticles prepared by electrospinning

“…4. In atmosphere, the oxygen molecules are adsorbed onto the SnO 2 nanoparticles surface to form chemisorbed oxygen (O 2 À , O 2 À and O À ) [6]. The chemisorbed oxygen species capture electrons from the conduction band of SnO 2 nanoparticles, forming an electron depletion layer on the particle surface.…”

“…Electrospinning usually can be used for synthesis nanopaticles due to large specific surface area [5]. However, till now, few studies have been carried out regarding the acetic acid sensing characteristics of SnO 2 nanoparticles with particle size of about 6 nm produced by electrospinning [6]. In this work, a simple and economical method has been used for preparing SnO 2 rectangular nanoparticles with particle size less than 10 nm.…”