Influence of Li doping on the optical and magnetic properties of ZnO nanorods synthesized by low temperature hydrothermal method

• Published in: Thin solid films Vol. 529; pp. 181 - 184
• Main Authors: Kung, C.Y., Lin, C.C., Young, S.L., Horng, Lance, Shih, Y.T., Kao, M.C., Chen, H.Z., Lin, H.H., Lin, J.H., Wang, S.J., Li, J.M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2013; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Diffraction patterns; Doping; Exact sciences and technology; Growth from solutions; Hydrothermal method; Magnetic properties; Magnetization; Materials science; Methods of crystal growth; physics of crystal growth; Methods of nanofabrication; Nanorods; Nanoscale materials and structures: fabrication and characterization; Nanotubes; Optical properties; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Oxygen vacancy; P-type semiconductors; Photodetector; Photoluminescence; Physics; Semiconductors; Zinc oxide; ZnO nanorod; ZnO nanorod; Hydrothermal method; Magnetization; Photodetector; Photoluminescence; Oxygen vacancy; Temperature dependence; Raman spectra; Vacancies; Semiconductor materials; Doping; Photodetectors; XRD; Hexagonal crystals; Hydrothermal synthesis; Optical properties; Wurtzite structure; Crystal growth from solutions; Zinc oxide; Silicon; Nanorod; Nanostructured materials; Nanomaterial synthesis; Magnetic properties
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2012.05.044

Well-defined pure Zn1−xLixO (x=0, 0.05 and 0.1) nanorods were hydrothermally synthesized at the low temperature of 90°C. The X-ray diffraction patterns of all three compositions with a single diffraction peak (0002) showed the same wurtzite hexagonal structure due to the similar radius of Zn and Li. The optical and magnetic properties were influenced by the oxygen vacancies induced by Li doping in the ZnO nanorods. The Raman shift spectrum indicated a slight increasement of oxygen vacancies which enhanced the green emission and ferromagnetism by the doping of Li in the ZnO nanorods. Besides, p-type ZnO:Li semiconductor nanorods were obtained by Li doping. The characteristics of the UV photodetector with p-ZnO:Li nanorod/n-Si structure were also measured. ► Zn1−xLixO nanorods have grown by hydrothermal method at a low temperature of 90°C. ► Doping of Li increases the doping-induced defects. ► Saturation magnetization increases as Li content increases. ► ZnO-based UV photodetector with nanorod structure is achieved.