Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-01-01

Journal: INTERNATIONAL JOURNAL OF NANOTECHNOLOGY

Included Journals: Scopus、EI、SCIE

Volume: 10

Issue: 1-2

Page Number: 22-29

ISSN: 1475-7435

Key Words: cation exchange; Mg(x)Zn(1-x)Oalloy; band gap; UV-visible absorption

Abstract: We developed a novel cation exchange method to prepare the alloyed semiconductors. A series of self- assembled magnesium doped zinc oxide (MgxZn1-xO) particles were synthesised by varying the molar ratios of Mg precursor Mg-5(CO3)(4)(OH)(2)center dot 4H(2)O to Zn precursor ZnAc2 center dot 4H(2)O from 1: 1 to 3: 1 at different cation exchange time. Powder X-ray Diffraction (XRD) indicates that the samples are a mixture of hexagonal and cubic phases. The UV-visible (UV-vis) absorption spectra show that the band gap of MgxZn1-xO particles can be readily tuned by optimising the cation exchange time and the molar ratio of precursors. The morphology of MgxZn1-xO particles was observed by Scanning Electron Microscopy (SEM).