期刊
出版社
ELSEVIER
DOI: 10.1016/j.mseb.2022.115901
关键词
ZnO; Microwave -assisted growth; Hexagonal rods; Hydrogen bonding; Template -free growth
资金
- SERB, DST, Govt. of India [ECR/2016/001183]
- Symbiosis Centre for Research and Innovation, Symbiosis International (Deemed University) [2014/563]
- SIU
This paper reports a rapid synthesis method for growing template-free three-dimensional hexagonal zinc oxide micro-rods using pulsed-microwave irradiation technique. The growth mechanism and optical properties of these structures were studied, and their potential applications as miniature sensors or in lasing applications were discussed.
Here, a rapid synthesis method for growing template-free three-dimensional hexagonal zinc oxide (ZnO) micro -rods (HZMR) using a pulsed-microwave (p-MW) irradiation technique is reported. The effects of microwave exposure time and power are shown to tune the morphology of hexagonal rods from solid to blind hole to hollow rods. X-ray diffraction (XRD) confirmed the growth of pure ZnO phase. Morphological investigations by Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM), optical prop-erties by micro-Raman, Diffuse Reflectance Spectroscopy (DRS), Attenuated Total Reflectance (ATR) and Pho-toluminescence (PL) spectroscopy techniques were carried out. The PL studies reveal a dominant red emission along with characteristic blue and green emissions. The resulting structures have the scope of being applied as miniature sensors or in lasing applications. The blind-holed structures can be used as miniature crucibles/pots in reactions. This template-free growth of hexagonal rods is a very simple and economical technique that can result in solid, hollow or one-end blind hexagonal rods. The paper discusses the growth mechanism of these unique hierarchical HZMR.
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