S引入ZnO的水热生长及其微观发光特性研究

doi:10.3976/j.issn.1002-4026.2019.02.005

Abstract

Abstract: Double-rod shaped pure ZnO and sulfur Introducted ZnO (S-ZnO) samples with twin crystal structure have been synthesized by a one-step hydrothermal method, and the effects of sulfur doping on the structure, morphology, and fluorescence behavior of resulted samples were systematically studied. XRD results showed that no new phase appeared in S-ZnO samples and the sulfur existed just as the dopant in the samples. Photoluminescence (PL) results at low temperature showed that there was no visible light emission for pure ZnO samples, while strong green light emission peaks appeared for the S-ZnO samples. When PL was measured at room temperature, both samples showed visible emissions: orange light emission (570 nm) for ZnO and green light emission (500 nm) for S-ZnO. Microzone cathodoluminescence (CL) results gave an almost undetectable orange light emission for ZnO samples, but for S-ZnO samples, the green light emission was stronger and its intensity was higher than near-band-gap emission. The results of this study play an important role on further understanding the defects caused by the introduction of sulfur into ZnO and its luminescence mechanism, making a useful and beneficial exploration to enhance the visible light emission characteristics of ZnO.

Key words: sulfur introducted, micro-scale luminescence properties, hydrothermal method, ZnO

CLC Number:

TB303

GAO Xiu-mei, GUO Hong-ying, LI Ya-nan. Hydrothermal growth of sulfur introducted ZnO and its luminescence properties on the microscale[J].Shandong Science, 2019, 32(2): 28-33.

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Hydrothermal growth of sulfur introducted ZnO and its luminescence properties on the microscale

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