Journal ArticleDOI
Colloidal chemically fabricated ZnO : Cu-based photodetector with extended UV-visible detection waveband
Liang Hu,Liping Zhu,Haiping He,Yanming Guo,Guoyao Pan,Jie Jiang,Yizheng Jin,Luwei Sun,Zhizhen Ye +8 more
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TLDR
Polycrystalline ZnO : Cu-based film photodetectors with extended detection waveband (UV and visible light) were fabricated using facile colloidal chemistry and a post-annealing process to understand this complex photoconduction behaviour.Abstract:
Polycrystalline ZnO : Cu-based film photodetectors with extended detection waveband (UV and visible light) were fabricated using facile colloidal chemistry and a post-annealing process. The obtained detectors are highly sensitive to visible light and can realize the response switch between UV and visible light. A native and extrinsic trap cooperatively controlled space charge limited (SCL) transport mechanism is proposed to understand this complex photoconduction behaviour.read more
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Self-powered ultrafast broadband photodetector based on p-n heterojunctions of CuO/Si nanowire array.
TL;DR: A new self-powered broadband photodetector was fabricated by coating an n-silicon nanowire (n-Si NW) array with a layer of p-cupric oxide (CuO) nanoflakes through a new simple solution synthesis method, showing excellent rectification characteristics in the dark and distinctive photovoltaic behavior under broadband light illumination.
Journal ArticleDOI
Photocatalytic hydrogen evolution from water splitting using Cu doped ZnS microspheres under visible light irradiation
TL;DR: In this paper, a microwave irradiation method was used to synthesize Cu/ZnS microspheres without using any template, which were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscope (HR-TEM), inductively coupled plasma optima optical emission spectrometer (ICP-OES), XPS, diffused reflectance spectroscopy (DRS), and electrochemical impedance spectrometric (EIS) methods.
Journal ArticleDOI
Self-powered UV–visible photodetectors based on ZnO/Cu2O nanowire/electrolyte heterojunctions
Zhiming Bai,Yinghua Zhang +1 more
TL;DR: ZnO/Cu2O branched heterojunction arrays (BHAs) were synthesized via hydrothermal and chemical bath deposition process for the application in photoelectrochemical type self-powered UV-visible photodetectors.
Journal ArticleDOI
Fast and enhanced broadband photoresponse of a ZnO nanowire array/reduced graphene oxide film hybrid photodetector from the visible to the near-infrared range.
TL;DR: In the present work, a ZnO nanowire array/reduced graphene oxide film hybrid nanostructure was realized, and the photovoltaic responses from the visible to the near-infrared range were investigated.
Journal ArticleDOI
Sonochemical Synthesis of Hollow Copper Doped Zinc Sulfide Nanostructures: Optical and Catalytic Properties for Visible Light Assisted Photosplitting of Water
TL;DR: Hollow copper doped ZnS (Cu-ZnS) nanostructures were synthesized by sonochemical approach and characterized well using various analytical tools as mentioned in this paper, which showed that the prepared copper-doped zinc crystallites have a hollow-sphere-like self-assembled nanostructure.
References
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Journal ArticleDOI
Space-Charge-Limited Currents in Solids
TL;DR: The presence of traps not only reduces the magnitude of space-charge-limited currents, but also is likely to distort the shape of the currentvoltage curve from an ideal square law to a much higher power dependence on voltage.
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Defects in ZnO
TL;DR: A review of defects in ZnO is presented in this paper, with an emphasis on the physical properties of point defects in bulk crystals, and the problem of acceptor dopants remains a key challenge.