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The development of solution strategies for Zinc oxide(Zn O) quantum dots provides a pathway to utilizing Zn O nanocrystal thin films in optoelectronic devices.In this work,quasi-spherical Zn O quantum dots with a diameter of 5 nm are synthesized by using ethanol as a solvent.Zn O nanocrystal thin film is obtained by spin-coating Zn O quantum dots on a Au interdigital electrode(IDE)/Al2O3 substrate and annealing at different temperatures in order to yield the optimal photosensitive on/off ratio of Zn O.For further enhancing the responsivity,ion sputtering is utilized to deposit Pt nanoparticles on the surface of Zn O nanocrystal thin film,the responsivity of the Zn O/Pt bilayer nanostructure increases from 0.07 A/W to 54 A/W,showing that the metal/inorganic nanocrystal bilayer nanostructure can be used to improve the performance of optoelectronic devices.The excellent properties of Zn O/Pt bilayer nanostructure have important applications in future electronic and optoelectronic devices.
The development of solution strategies for Zinc oxide (Zn O) quantum dots provides a pathway to utilizing Zn O nanocrystal thin films in optoelectronic devices. In this work, quasi-spherical Zn O quantum dots with a diameter of 5 nm are synthesized by using ethanol ZnO nanocrystal thin film is obtained by spin-coating Zn O quantum dots on a Au interdigital electrode (IDE) / Al2O3 substrate and annealing at different temperatures in order to yield the optimal photosensitive on / off ratio of Zn O. For further enhancing the responsivity, ion sputtering is utilized to deposit Pt nanoparticles on the surface of Zn O nanocrystal thin film, the responsivity of the Zn O / Pt bilayer nanostructure increases from 0.07 A / W to 54 A / W, showing that the metal / inorganic nanocrystal bilayer nanostructure can be used to improve the performance of optoelectronic devices. excellent properties of Zn O / Pt bilayer nanostructure have important applications in future electronic and optoelectronic devices.