Spray pyrolysis deposited CdO: Al films for trimethylamine sensing application

Balachandar, Balakrishnan Kalaiarasan; Logu, T.; Ramprasath, R.; Sankarasubramanian, K.; Soundarrajan, P.; Sridharan, M.; Ramamurthi, K.; Sethuraman, K.

doi:10.1016/j.mssp.2019.104753

Cited by 20 publications

(4 citation statements)

References 37 publications

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“…The simulated data are presented in Table 1. for CdO layers and 3 g/cm 3 for MgO layers, consistent with the analysis of the critical angle position. Root-mean-square (RMS) roughness parameters can also be extracted from XRR curves.…”

Section: Resultssupporting

confidence: 88%

“…Many methods have been adopted to grow CdO films such as spray pyrolysis, sputtering, pulsed laser deposition, metal organic chemical vapor deposition (MOCVD), sol–gel, , etc. Cadmium-containing thin films are used in a wide (large) variety of applications such as photovoltaic active layers, gas sensors, and others. , The extensive use of TCOs as transparent electrodes in many advanced technology applications has led to intense investigations of their physical, chemical, and optoelectronic nature.…”

Section: Introductionmentioning

confidence: 99%

“…Many methods have been adopted to grow CdO films such as spray pyrolysis, 3 sputtering, 4 pulsed laser deposition, 5 metal organic chemical vapor deposition (MOCVD), 6 sol−gel, 7,8 etc. Cadmium-containing thin films are used in a wide (large) variety of applications such as photovoltaic active layers, 9 gas sensors, 10 and others.…”

Section: Introductionmentioning

confidence: 99%

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Short-Period CdO/MgO Superlattices as Cubic CdMgO Quasi-Alloys

Przeździecka

Wierzbicka

Dłużewski

et al. 2020

Crystal Growth & Design

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New perspective cubic quasi-alloy {CdO/MgO} m short-period superlattices (SLs) were grown on r-plane sapphire substrates by plasma-assisted molecular beam epitaxy. The quality of crystals was characterized using high resolution X-ray diffraction and transmission electron microscopy (TEM) techniques. X-ray diffraction confirmed the cubic structure of the samples and the presence of peaks corresponding to the SLs with period ranging from 0.6 to 5 nm. Reciprocal space maps around the (200) and (412) Bragg reflections were collected to analyze the strain in the SLs layers with very high precision. Local lattice parameters were measured by digital processing of experimental HRTEM images. From TEM and small-angle X-ray, thicknesses and growth rates of individual layers of MgO and CdO have been extracted. We found that thicknesses of the CdO and MgO layers influence the measured band gap. Surface roughness parameters for SLs were obtained by both small-angle X-ray diffraction and atomic force microscopy study.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Short-Period CdO/MgO Superlattices as Cubic CdMgO Quasi-Alloys

Przeździecka

Wierzbicka

Dłużewski

et al. 2020

Crystal Growth & Design

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“…It is also noteworthy that the increasing Th ratio is parallel to the S ratio. (311) have high intensity and well matched compared to literature [25,26]. The shifts change in the diffraction peaks, when Th is increased into the CdO lattice structure.…”

Section: Morphological Structural and Optical Characteristicssupporting

confidence: 71%

The Effect of Doping Thiourea In CdO Thin Films For Electronic Applications

Soylu

2021

Preprint

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Cadmium oxide (CdO) and Thiourea (Th) doped CdO thin films were deposited on soda lime glass (SLG) and crystalline p-type Si (100) substrates for various Th doping concentrations (0.3, 0.5, 0.7 at.%) using spin coating method. Some structural parameters such as the crystallite size, lattice constant, dislocation density (δ) and strain in the films were obtained from XRD analysis in which the polycrystalline structure with cubic nature and (111) prefential orientation was confirmed. CdO thin film has not shown any change in crystal phase after Th doping. The optical study emerged that the Th doping caused important changes in the transmittance, absorbance and reflectance spectra. A maximum optical transmittance (above 80%) have been obtained for 0.3% Th doped CdO thin films. Th doped CdO/p-Si heterojunctions exhibited low rectifying character and were not found to be the light sensitive.

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Construction of MoO3/MoSe2 nanocomposite-based gas sensor for low detection limit trimethylamine sensing at room temperature

Zhou

Jin

et al. 2021

J Mater Sci: Mater Electron

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In this paper, MoO 3 /MoSe 2 n-n heterostructure was constructed for fabricating trimethylamine (TMA) gas sensor by an improved hydrothermal and spin-coating method. The surface morphology and microstructure of the prepared materials were analyzed by XRD, XPS, SEM and TEM characterization methods. The microstructural characterization results demonstrated that the MoO 3 /MoSe 2 heterostructure had been successfully synthesized, in which the MoSe 2 had a ower-shaped structure, and MoO 3 had a rod-shaped structure. At the same time, the MoSe 2 surface exhibited periodic honeycomb structure. The gas-sensitivity experimental results showed that the proposed MoO 3 /MoSe 2 sensor had excellent TMA sensing performance at room temperature, including high response capability, low detection limit (20 ppb), short response/recovery time (12 s/19 s), long-term stability, good repeatability and outstanding selectivity. The heterostructure of MoO 3 /MoSe 2 had made outstanding contributions to the enhanced TMA gas sensing performance at room temperature.

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Spray pyrolysis deposited CdO: Al films for trimethylamine sensing application

Cited by 20 publications

References 37 publications

Short-Period CdO/MgO Superlattices as Cubic CdMgO Quasi-Alloys

Short-Period CdO/MgO Superlattices as Cubic CdMgO Quasi-Alloys

The Effect of Doping Thiourea In CdO Thin Films For Electronic Applications

Construction of MoO3/MoSe2 nanocomposite-based gas sensor for low detection limit trimethylamine sensing at room temperature

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