Lanthanum doped SnO2 and ZnO thin films sensitive to ethanol and humidity

Stambolova, I.; Konstantinov, Konstantin; Vassilev, Stanislav V.; Peshev, P.; Tsacheva, Ts.

doi:10.1016/s0254-0584(99)00193-5

Cited by 112 publications

(43 citation statements)

References 11 publications

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“…Tricoli, A. Teleki, and M. Righettoni Reviews Table 2: Gas-sensing films of different materials produced by the dry methods presented in [195][196][197] SP ZnO 12-400 50-500 Al, CdO, La Act, C 4 H 10 , CO, EtOH, MeOH, NO 2 [157,[198][199][200][201] [a] Synthesis method: for abbreviations please see Table 1. If grain sizes were not reported, crystallite sizes are listed.…”

Section: Crystallinity and Grain Sizementioning

confidence: 99%

Semiconductor Gas Sensors: Dry Synthesis and Application

2010

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Since the development of the first chemoresistive metal oxide based gas sensors, transducers with innovative properties have been prepared by a variety of wet- and dry-deposition methods. Among these, direct assembly of nanostructured films from the gas phase promises simple fabrication and control and with the appropriate synthesis and deposition methods nm to μm thick films, can be prepared. Dense structures are achieved by tuning chemical or vapor deposition methods whereas particulate films are obtained by deposition of airborne, mono- or polydisperse, aggregated or agglomerated nanoparticles. Innovative materials in non-equilibrium or sub-stoichiometric states are captured by rapid cooling during their synthesis. This Review presents some of the most common chemical and vapor-deposition methods for the synthesis of semiconductor metal oxide based detectors for chemical gas sensors. In addition, the synthesis of highly porous films by novel aerosol methods is discussed. A direct comparison of structural and chemical properties with sensing performance is given.

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Section: Crystallinity and Grain Sizementioning

confidence: 99%

Semiconductor Gas Sensors: Dry Synthesis and Application

2010

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“…According to literature, [21][22][23][24][25][26][27][28][29][30][31]33 ZnO interacted uniquely with VOCs bearing hydroxyl groups. Therefore, in this study, the behaviors of our ZnO nanoparticles were examined their responses to six compounds (methanol, ethanol, propanol, TCE, carbon tetrachloride (CCl4), and chloroform (CHCl3)) each injected at a volume of 1 μL into the static cell.…”

Section: Selectivity In the Detection Of Alcoholsmentioning

confidence: 99%

“…For instance, taking advantage of the catalytic behavior of ZnO, sensors have been developed for the detection of NOx, 17 alkanes, 18 ethers, 19 amines, [20][21][22] ketones, [23][24][25] aromatic volatile compounds, 26 and alcohols. [27][28][29][30][31] Unfortunately, these sensors are typically operated at temperatures above 250 C to trigger catalytic reactions that allow electronic sensing. The need for extreme sensing conditions and catalytically reactive molecules limits the application of these types of detection systems.…”

Section: Introductionmentioning

confidence: 99%

Development of a ZnO-modified Light-Scattering Sensor for the Detection of alcohols

Nian

Yang

2010

ANAL. SCI.

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A light-scattering sensor that incorporated zinc oxide (ZnO) nanoparticles was developed and characterized in this study. Evenly distributed nanostructured ZnO materials were formed on the sensing elements through the calcination of zinc acetate-treated sensing elements in a high-temperature oven. There was a large change in the scattering properties of the nanostructured ZnO materials after adsorption of the target compounds; this behavior was exploited for quantitative purposes. To investigate the detection of volatile compounds using this method, both static and flow cell-type devices were constructed. To determine the most suitable nanostructured ZnO material for the light scattering sensors, several factors that influenced their morphologies, including the calcination temperature, calcination time, and the amount of ZnO colloidal solution for calcination, were examined. Fiber-like ZnO structures were produced at temperatures below 400 C. Above 400 C, particles having round shapes were observed; the higher the calcination temperature, the larger the particle sizes. Based on an examination of the signals from several volatile organic compounds, the prepared ZnO sensor was selective for the detection of alcohols, and the observed signals followed the surface-adsorption mechanism. The prepared sensor is fast in response, and the detection time can be shorter than 2 min. For quantitative purposes, the linear range was limited to low concentrations of alcohols, i.e., up to ca. 200 ppm.

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“…Thin oxide films have been deposited using different techniques, such as thermal evaporation [6,7], sputtering [7][8][9][10][11][12][13], chemical vapour deposition [6,[14][15][16], sol-gel dip coating [6,13,17], painting [6,13,18], spray pyrolysis [6,8,16,[19][20][21][22][23][24], hydrothermal method [25] and pyrosol deposition [6,16,[26][27][28]. In this research, SnO2 thin film was preparing by using atmospheric chemical vapor deposition (APCVD) technique.…”

Section: Introductionmentioning

confidence: 99%

Study the effect of number of nozzle on optical and structural properties of sno2 films grown by (apcvd)

2017

IJLTET

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Lanthanum doped SnO2 and ZnO thin films sensitive to ethanol and humidity

Cited by 112 publications

References 11 publications

Semiconductor Gas Sensors: Dry Synthesis and Application

Semiconductor Gas Sensors: Dry Synthesis and Application

Development of a ZnO-modified Light-Scattering Sensor for the Detection of alcohols

Study the effect of number of nozzle on optical and structural properties of sno2 films grown by (apcvd)

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