Effects of Mo single-doping and Mo-Al co-doping on ZnO transparent conductive films

Li, Zhaoyang; Li, Jiwen; Xiong, Mei; Lei, Jinkun; Chen, Yiyi; Zhang, Shengkang

doi:10.1016/j.apsusc.2022.152588

Cited by 17 publications

(2 citation statements)

References 38 publications

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“…Increasing the weight ratio of aluminum in ZnO film leads to an increase in the absorption rate and a decrease in the permeability, which impedes or reduces the movement of free electrons from aluminum to the zinc oxide film. 43…”

Section: Resultsmentioning

confidence: 99%

Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Al-Maamori,

Al-Jamal,

Habeeb

et al. 2024

Journal of Chemical Research

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Al: ZnO films are prepared by spraying from the pure ZnO and Al with doping at different weight ratios 0.01, 0.03, 0.05, and 0.09. X-ray diffraction, atomic force microscopy, and energy-dispersive X-ray spectroscopy are used to analyze the structural properties of the films. The results of X-ray diffraction prove that polycrystalline Al:ZnO with a hexagonal wurtzite structure is preferentially oriented on the c-axis, and this is further confirmed by transmission electron microscopy. In addition, 0.09 wt% of Al-doping shows high orientation and homogeneity with the (002) plane, which leads to an increase in the surface roughness properties of the thin films as the root main square by 57.4%. The annealing process at high temperatures increases the conductivity of the Al:ZnO films. The rate of electronic mobility increases slightly with low doping and decreases with increasing doping until it reaches its lowest value (0.1 cm2 (V.s)−1) at a doping ratio of 0.035 wt%. The samples show considerable response for CO at 80 ppm gas concentration with gas responses of 85% and 40% at 90 °C for 0.03 wt% Al:ZnO and ZnO films, respectively. The overall study observed that fabricated sensor Al3+-doped ZnO is reliable and very rapid in detecting carbon monoxide vapors at moderately high temperatures and low gas concentrations.

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Section: Resultsmentioning

confidence: 99%

Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Al-Maamori,

Al-Jamal,

Habeeb

et al. 2024

Journal of Chemical Research

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“…Moreover, ZnO is inherently n-type, but ex-/in-situ doping can modulate the conductivity of ZnO as well as photodetector performance [6]. Among several metallic, non-metallic and rear-earth dopants, a few rear-earth dopants like Er, Y and Dy are not studied widely and systematically in ZnO [7][8]. Therefore, in the current work, Er is chosen for systematic study by varying dopant concentrations and their impact on optical and opto-electronic properties.…”

mentioning

confidence: 99%

Investigation of self-powered photoresponse performance of all inorganic lead-free halide perovskites (CsSnCl3) nanocrystals (NCs) decorated Er:ZnO nanowires/Si heterojunctions

Kumar,

Saha,

Dalal

et al. 2023

Functional Material Applications: From Energy to Sensing

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In the current study, we report the all-inorganic lead-free halide perovskites-oxide heterojunction based optoelectronic device fabrications on Si substrate by employing cost-effective chemical bath deposition (CBD) and hot-injection techniques. The selective rare-earth doping of erbium (Er) in ZnO nanowires is performed by employing double-step CBD technique on Si platform for developing a superior heterojunction between Er:ZnO and Si. Furthermore, lead-free perovskites NCs of CsSnCl3 are synthesized by using cost-effective hot-injection method and such NCs are decorated over the Er:ZnO nanowires to passivate the surface defect states. The effect of Er-doping and CsSnCl3 incorporation on structural, optical and luminescence properties of nanowire heterojunctions has been successfully investigated by employing XRD, UV-VIS and PL. The crystal structure of Er:ZnO and Er: ZnO-CsSnCl3 heterojunctions has been analyzed using X-Ray Diffraction (XRD) technique, which confirms the polycrystalline nature of nanowires with the formation of a highly crystalline cubic phase of CsSnCl3. The optical absorption of Er:ZnO nanowires and CsSnCl3 NCs are studied by using ultraviolet-visible (UV-VIS) spectroscopy and corresponding energy bandgaps are estimated to be 3.31 eV and 3.24 eV, respectively. The oxygen vacancies and complex defect states are minimized in ZnO nanowires by Er-doping and perovskites NCs addition and such CsSnCl3 decorated Er:ZnO nanowires exhibit enhanced UV luminescence as compared to undoped ZnO. Finally, photoresponse of undoped, Er-doped and CsSnCl3 incorporated ZnO nanowires/Si heterojunction has been studied by measuring dark and photo-current and photo-current switching at UV-A wavelength region and such heterojunctions shows excellent photoresponse under self-powered mode. Therefore, such perovskites incorporated Er:ZnO nanowires/Si heterojunction can be a potential candidate for fabricating a highly responsive self-powered UV-detector (UV-A).

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Investigation of the Effects of Cu and Fe/Cu Doping on ZnO Nanoparticles for Application as a Solid Electrolyte Battery

Taka,

Das

2024

Physica Status Solidi (a)

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In this work, investigation is done on the effect of doping with copper (Cu) and iron/copper (Fe/Cu) on zinc oxide (ZnO) nanomaterials synthesized through a cost‐effective wet chemical precipitation method for application as a solid‐state electrolyte battery. The scanning electron microscope with energy dispersive X‐ray spectroscopy is used to investigate the morphology and elements presence in Cu and Fe/Cu‐doped ZnO nanoparticles. The X‐ray diffraction data illustrates that the crystallite sizes of pure ZnO, Cu–ZnO, and Fe/Cu–ZnO nanoparticles are 14.86, 13.35, and 10.66 nm, respectively, at the (101) plan calculated by Debye Scherrer's formula. The UV‐Vis absorption spectrum shows that the band gap energies of ZnO, Cu–ZnO, Fe–ZnO, and Fe/Cu–ZnO nanoparticles are identified as 3.382, 3.690, 3.5, and 3.465 eV, respectively. The electrical characterization revealed maximum impedance in Fe/Cu–ZnO nanoparticles with 400 Ω at 1 KHz frequency in comparison to other samples. The current–voltage (I–V) measurement shows that the current sensitivity and electrical conductivity are both enhanced for Fe/Cu–ZnO nanoparticles. Fe and Cu co‐doping improved the electrical characteristics of ZnO, and the Fe/Cu–ZnO nanoparticles are employed as a solid electrolyte in a battery, which achieved a high specific charge capacity of 657.85 mAh g−1.

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Effects of Mo single-doping and Mo-Al co-doping on ZnO transparent conductive films

Cited by 17 publications

References 38 publications

Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Investigation of self-powered photoresponse performance of all inorganic lead-free halide perovskites (CsSnCl3) nanocrystals (NCs) decorated Er:ZnO nanowires/Si heterojunctions

Investigation of the Effects of Cu and Fe/Cu Doping on ZnO Nanoparticles for Application as a Solid Electrolyte Battery

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Effects of Mo single-doping and Mo-Al co-doping on ZnO transparent conductive films

Cited by 17 publications

References 38 publications

Al3+-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Al3+-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Investigation of self-powered photoresponse performance of all inorganic lead-free halide perovskites (CsSnCl3) nanocrystals (NCs) decorated Er:ZnO nanowires/Si heterojunctions

Investigation of the Effects of Cu and Fe/Cu Doping on ZnO Nanoparticles for Application as a Solid Electrolyte Battery

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Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study

Al³⁺-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study