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Indium-doped ZnO/Cu-graphene thin films were successfully synthesized by a hydrothermal method at 90 °C for 6 h. The crystalline structure, elementary compositions, morphologies, and photoluminescence properties were investigated. The results… Click to show full abstract
Indium-doped ZnO/Cu-graphene thin films were successfully synthesized by a hydrothermal method at 90 °C for 6 h. The crystalline structure, elementary compositions, morphologies, and photoluminescence properties were investigated. The results indicated that ZnO nanorods with diameters varying from 0.315 to 3.348 μm were obtained on Cu-graphene flexible substrates. An ultraviolet (UV) peak at 398 nm and a blue band were observed on the room-temperature photoluminescent (PL) spectra. The UV emission peak mainly attributed to the exciton transition. The blue emission band was assigned to the Zn interstitial (Zni) and Zn vacancy (VZn) level transition. The strongest blue emission band was observed on the PL spectra corresponding to the indium (In) doping concentration of 0.3%. The influence of In doping on the blue band was also investigated.
Journal Title: Sensors and Materials
Year Published: 2019
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