Investigation of Third-Order Optical Susceptibility in ZnO/SnO2/Ag Ternary Composite Nanoparticles

Tahmasebi, Shahla Raki; Haghighatzadeh, Azadeh

doi:10.1007/s10904-021-01993-4

Cited by 1 publication

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“…Both ZnO and SnO 2 are direct bandgap semiconductors, so the optical band energy can be obtained by Tauc plots using the Kubelka‐Munk equation (Equation ). [ 21 ]

{()(, normalα italichv)}^{2} = A (hv - E_{normalg})

wherein α,

hv

, A and E g are the optical absorption coefficient, the photon energy, the proportional constant and the optical band energy, respectively. There are two absorption edges in the ZnO film, one is 3.30 eV related to the ZnO film, which was consistent with the near‐band edge emission of PL spectra; and the other is 3.03 eV, which origins from the light trapping effect of the ZnO nanorods.…”

Section: Resultsmentioning

confidence: 99%

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure

Tan

et al. 2023

Energy & Environ Materials

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Development of metal oxide semiconductors‐based methane sensors with good response and low power consumption is one of the major challenges to realize the real‐time monitoring of methane leakage. In this work, a self‐assembled mulberry‐like ZnO/SnO2 hierarchical structure is constructed by a two‐step hydrothermal method. The resultant sensor works at room temperature with excellent response of ~56.1% to 2000 ppm CH4 at 55% relative humidity. It is found that the strain induced at the ZnO/SnO2 interface greatly enhances the piezoelectric polarization on the ZnO surface and that the band bending results in the accumulation of chemically adsorbed ions close to the interface, leading to significant improvement in the sensing performance of the methane gas sensor at room temperature.

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“…Both ZnO and SnO 2 are direct bandgap semiconductors, so the optical band energy can be obtained by Tauc plots using the Kubelka‐Munk equation (Equation ). [ 21 ]

{()(, normalα italichv)}^{2} = A (hv - E_{normalg})

wherein α,

hv

Section: Resultsmentioning

confidence: 99%

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure

Tan

et al. 2023

Energy & Environ Materials

View full text Add to dashboard Cite

show abstract

Investigation of Third-Order Optical Susceptibility in ZnO/SnO2/Ag Ternary Composite Nanoparticles

Cited by 1 publication

References 72 publications

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure

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Investigation of Third-Order Optical Susceptibility in ZnO/SnO2/Ag Ternary Composite Nanoparticles

Cited by 1 publication

References 72 publications

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO2 Hierarchical Structure

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO2 Hierarchical Structure

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Product

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Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure

Remarkably Enhanced Methane Sensing Performance at Room Temperature via Constructing a Self‐Assembled Mulberry‐Like ZnO/SnO₂ Hierarchical Structure