Synthesis and Study of Zinc Oxide Layers Sensitized by Colloidal Nanocrystals

Nalimova, S. S.; Maximov, Aleksander A.; Мошников, В. А.; Bobkov, A. A.; Mazing, D. S.; Ryabko, A. A.; Levkevich, Ekaterina A.; Семенова, А.А.

doi:10.1109/eexpolytech.2019.8906789

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…Thus, the conductivity of the sample decreases and tends to a new stationary value. It should be noted that no I(t) peak is observed under UV irradiation without heating, which is explained by the presence of adsorbed moisture on the surface of the ZnO [35] sensor layer.…”

Section: Resultsmentioning

confidence: 93%

“…Therefore, the opportunity of replacing the heating of the sensitive layer by irradiation has been widely studied recently. For oxide semiconductors, the opportunity of both ultraviolet irradiation with an energy exceeding the forbidden band width [31,32] and irradiation in the visible region of the spectrum [33][34][35] is being investigated. To use visible radiation, metal oxides are sensitized by doping, decorating with narrower band gap semiconductors or plasmonic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Gas sensitivity of nanostructured coatings based on zinc oxide nanorods under combined activation

et al. 2022

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This paper presents a study of the gas sensitivity of a nanostructured zinc oxide coating to isopropyl alcohol vapor during heating, ultraviolet irradiation, as well as simultaneous heating and irradiation. Simultaneous heating to 150oC and ultraviolet irradiation ensures an increase in the sensor layer response. A 10-fold decrease in the power consumption of an ultraviolet light-emitting diode results in a 1.2-fold decrease in the response of the sensor coating. Reducing the operating temperature of a gas sensor with low power consumption and achieving the required sensitivity can provide adsorption sensors integration into portable devices for monitoring ambient air quality. Keywords: zinc oxide, nanorods, gas sensor, UV irradiation, combined activation.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Gas sensitivity of nanostructured coatings based on zinc oxide nanorods under combined activation

et al. 2022

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“…Таким образом, проводимость образца уменьшается и стремится к новому стационарному значению. Следует отметить, что без нагрева пика I(t) при УФ облучении не наблюдается, что объясняется наличием адсорбированной влаги на поверхности сенсорного слоя ZnO [35].…”

Section: результаты и обсуждениеunclassified

“…Поэтому в последнее время широко изучается возможность замены нагрева чувствительного слоя облучением. Для оксидных полупроводников исследуется возможность как ультрафиолетового облучения с энергией, превышающей ширину запрещенной зоны [31,32], так и облучения в видимой области спектра [33][34][35]. Для использования видимого излучения оксиды металлов сенсибилизируют путем легирования, декорированием более узкозонными полупроводниками или плазмонными наночастицами.…”

Section: Introductionunclassified

Газочувствительность Наноструктурированных Покрытий На Основе Наностержней Оксида Цинка При Комбинированной Активации

Рябко¹,

Бобков²,

Налимова³

et al. 2022

Журнал Технической Физики

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This paper presents a study of the gas sensitivity of a nanostructured zinc oxide coating to isopropyl alcohol vapor during heating, ultraviolet irradiation, as well as simultaneous heating and irradiation. Simultaneous heating to 150 °C and ultraviolet irradiation ensures an increase in the sensor layer response. A 10-fold decrease in the power consumption of an ultraviolet light-emitting diode results in a 1.2-fold decrease in the response of the sensor coating. Reducing the operating temperature of a gas sensor with low power consumption and achieving the required sensitivity can provide adsorption sensors integration into portable devices for monitoring ambient air quality.

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Study of sensor properties of zinc oxide based nanostructures

Nalimova

Kondrat'ev

Ryabko

et al. 2020

J. Phys.: Conf. Ser.

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Nanostructures based on zinc oxide were synthesized on ceramic substrate with interdigitated electrodes by spin-coating and low-temperature hydrothermal method. The sensor response to CO, CO2 and O2 was studied at room temperature under near UV light illumination. Gas exposure was supplied using metrological certified equipment. All samples showed no response to CO2. Layers based on zinc oxide nanowires are most sensitive to CO because of complex morphology and more effective adsorption of gas molecules. The obtained dependencies allow us to characterize the interaction of nanostructure based on zinc oxide with the main oxidizing and reducing atmosphere gases.

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Synthesis and Study of Zinc Oxide Layers Sensitized by Colloidal Nanocrystals

Cited by 7 publications

References 13 publications

Gas sensitivity of nanostructured coatings based on zinc oxide nanorods under combined activation

Gas sensitivity of nanostructured coatings based on zinc oxide nanorods under combined activation

Газочувствительность Наноструктурированных Покрытий На Основе Наностержней Оксида Цинка При Комбинированной Активации

Study of sensor properties of zinc oxide based nanostructures

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