Photoresistive gas sensor based on nanocrystalline ZnO sensitized with colloidal perovskite CsPbBr3 nanocrystals

Чижов, А. С.; Rumyantseva, M. N.; Drozdov, K. A.; Krylov, I. V.; Batuk, Maria; Hadermann, Joke; Филатова, Д. Г.; Khmelevsky, Nikolay; Kozlovsky, V.F.; Maltseva, Liliya N.; Gaskov, Alexander

doi:10.1016/j.snb.2020.129035

Cited by 29 publications

(21 citation statements)

References 66 publications

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“…Under similar conditions the nanocomposites based on nanocrystalline SnO 2 , In 2 O 3 , and CdSe QDs also demonstrated enhanced photosensitivity and sensor sensitivity to NO 2 compared to individual nanocrystalline metal oxides. Gas sensitivity to NO 2 under blue light irradiation (λ max =470 nm, 8 mW/cm 2 ) of a nanocomposite based on nanocrystalline ZnO and cubic-shaped perovskite CsPbBr 3 colloidal quantum dots is demonstrated in the work [ 167 ].…”

Section: Activation Of Gas Sensitivity Of Semiconductor Metal Oxides Under Visible Lightmentioning

confidence: 99%

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

2021

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The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, In2O3, and WO3, which are the most widely used sensitive materials for semiconductor gas sensors, is presented. The activation of the gas sensitivity of semiconductor materials by both UV and visible light is considered. When activated by UV light, the typical approaches for creating materials are (i) the use of individual metal oxides, (ii) chemical modification with nanoparticles of noble metals and their oxides, (iii) and the creation of nanocomposite materials based on metal oxides. In the case of visible light activation, the approaches used to enhance the photo- and gas sensitivity of wide-gap metal oxides are (i) doping; (ii) spectral sensitization using dyes, narrow-gap semiconductor particles, and quantum dots; and (iii) addition of plasmon nanoparticles. Next, approaches to the description of the mechanism of the sensor response of semiconductor sensors under the action of light are considered.

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Section: Activation Of Gas Sensitivity Of Semiconductor Metal Oxides Under Visible Lightmentioning

confidence: 99%

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

2021

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“…In recent years bulk-nanostructuring using the cryomilling method got wide attention among scholars because of the energy-efficient nature compared to other NC production routes. Liquid phase NC materials synthesis includes processes, such as rapid solidification [58][59][60][61], electrodeposition [62][63][64], chemical precipitation [65,66], and sol-gel technique [67][68][69]. NC material synthesis in gaseous form is achieved by inert gas condensation [70][71][72], vapor deposition/sputtering [73][74][75][76][77], and plasma processing [78].…”

Section: Rapid Solidificationmentioning

confidence: 99%

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

et al. 2021

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Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

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“…Recently, organic and inorganic metal halide perovskites have attracted attention from scientists as excellent sensing materials owing to their unique physicochemical properties. [10][11][12][13][14][15][16][17][18][19] These materials have been established as frontiers in materials science for optoelectronic and energy applications. Their potential applications include photodetectors, solar cells, light-emitting diodes, carbon dioxide (CO 2 ) reduction reactions, and hydrogen evolution reactions.…”

Section: Introductionmentioning

confidence: 99%

A review on the sensing mechanisms and recent developments on metal halide-based perovskite gas sensors

2022

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Photoresistive gas sensor based on nanocrystalline ZnO sensitized with colloidal perovskite CsPbBr3 nanocrystals

Cited by 29 publications

References 66 publications

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

A review on the sensing mechanisms and recent developments on metal halide-based perovskite gas sensors

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