Bulk doping influence on the response of conductometric SnO2 gas sensors: Understanding through cathodoluminescence study

Cho, B.K.

doi:10.1016/j.snb.2014.01.108

Cited by 41 publications

(30 citation statements)

References 138 publications

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“…2). It should be noted that such behavior of the In 2 O 3 gassensitive properties after bulk and surface doping, when the improvement of the sensor parameters is being observed in a narrow concentration range of doping additives, is typical for a metal oxide gas sensors [19]. For In 2 O 3 :P-based gas sensors the situation is better.…”

Section: Resultsmentioning

confidence: 88%

“…According to a general view on the mechanism of gas sensing effect in metal oxides, the changes in sensor response may be caused by the changes in the bulk properties of the metal oxide grains, structural properties and phase composition of gas sensing matrix, catalytic activity of the surface, and the state of inter-grain interface [1,6,8,19,23,25].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

Boris

Brînzari

Han

et al. 2015

Ceramics International

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Section: Resultsmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

Boris

Brînzari

Han

et al. 2015

Ceramics International

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“…In addition, the effect of crystallite size stabilization is usually observed at concentrations exceeding the solubility limit of these additives in the main metal oxide. Unfortunately, these concentrations are unacceptable for thermoelectric materials, since at these concentrations there is a decrease in electron mobility and conductivity due to the increase in the concentration of structural defects [207]. As a result, the thermoelectric parameters of the oxides should deteriorate.…”

Section: Thin Nanostructured In 2 O 3 Filmsmentioning

confidence: 99%

In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion

Brînzari

Ham

2018

Crystals

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Abstract:In this paper, the thermoelectric properties of In 2 O 3 -based materials in comparison with other thermoelectric materials are considered. It is shown that nanostructured In 2 O 3 Sn-based oxides are promising for thermoelectric applications at moderate temperatures. Due to the nanostructure, specific surface properties of In 2 O 3 and filtering effects, it is possible to significantly reduce the thermal conductivity and achieve an efficiency of thermoelectric conversion inaccessible to bulk materials. It is also shown that a specific surface state at the intergrain boundary, optimal for maximizing the filtering effect, can be achieved through (1) the engineering of grain boundary parameters, (2) controlling the composition of the surrounding atmosphere, and (3) selecting the appropriate operating temperature.

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“…[5][6][7][8] The basic detection principle of semiconductor gas sensors is the resistance change of sensing materials with gas adsorption. 1-3 Among various gas sensors, metal oxide-based semiconductor gas sensors are especially attractive for solidstate detecting devices due to their high sensitivity, low cost, nontoxicity, and high stability.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and gas-sensing performance of Sr- or Fe-doped In₂O₃ hollow sub-microspheres

et al. 2015

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Sr-or Fe-doped In 2 O 3 hollow sub-microspheres were successfully fabricated without the assistance of any additives or templates. The obtained hollow In 2 O 3 sub-microspheres show relatively uniform size and band gap of $3.1 eV. Benefited from the hollow microstructure and doping effect, the doped In 2 O 3 submicrospheres show excellent gas sensing performance towards a series of organic solvents. For 100 ppm of formaldehyde, the Sr-and Fe-doped In 2 O 3 sensors demonstrate sensing responses of 9.4 and 5.5, respectively. These values are much higher than previously reported In 2 O 3 -based gas sensors.Interestingly, Fe-doped In 2 O 3 shows relatively higher sensing response to propanol than that of Srdoped In 2 O 3 , although towards formaldehyde, ethanol, acetone and heptane, Sr-doped In 2 O 3 shows relatively higher sensing responses. This investigation therefore indicates that doped In 2 O 3 hollow microstructures could be an effective platform for sensing hazardous indoor formaldehyde gas, and that sensing selectivity could be improved through the doping effect.

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Bulk doping influence on the response of conductometric SnO2 gas sensors: Understanding through cathodoluminescence study

Cited by 41 publications

References 138 publications

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion

Facile synthesis and gas-sensing performance of Sr- or Fe-doped In₂O₃ hollow sub-microspheres

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Bulk doping influence on the response of conductometric SnO2 gas sensors: Understanding through cathodoluminescence study

Cited by 41 publications

References 138 publications

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

In2O3:Ga and In2O3:P-based one-electrode gas sensors: Comparative study

In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion

Facile synthesis and gas-sensing performance of Sr- or Fe-doped In2O3 hollow sub-microspheres

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Product

Resources

About

Facile synthesis and gas-sensing performance of Sr- or Fe-doped In₂O₃ hollow sub-microspheres