Controllable synthesis of Eu³⁺ ions doped Zn（OH）F and ZnO micro-structures:Phase,morphology and luminescence property

Zhiyuan Chen，Jingbin Huang，Yanyan Wang，Dan Yue，Zhenling Wang，Jingyang Niu

Henan Key Laboratory of Polyoxometalate Chemistry,College of Chemistry and Chemical Engineering,Henan UniversityCollege of Chemistry and Molecular Engineering,Zhengzhou UniversityHenan Key Laboratory of Rare Earth Functional Materials,Zhoukou Normal University

摘 要：Eu³⁺ ions doped Zn（OH）F and ZnO micro-structures with specific morphologies were synthesized by a simple hydrothermal method only through altering the addition amount of NH₄F and hexamethylenetetramine（HMT）. The phase structure, morphology and luminescence properties of the as-prepared samples were characterized by X-ray powder diffraction（XRD）, scanning electron microscopy（SEM）,transmission electron microscopy（TEM）, photoluminescence（PL） spectra and lifetime. The results indicate that the obtained Zn（OH）F:Eu³⁺ samples possess net-like and dandelion-like morphologies,which have an identical orthorhombic phase structure. It is found that the addition amount of raw materials such as NH₄F and HMT plays a critical role for the formation of Zn（OH）F:Eu³⁺. If the addition amounts of NH₄F or HMT are reduced by half, the hexagonal ZnO:Eu³⁺ sample with peanut-like morphology can be obtained. Under the excitation of UV light, both the as-prepared Zn（OH）F:Eu³⁺and ZnO:Eu³⁺ samples exhibit the characteristic emission of the doped Eu³⁺.

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