Bandgap Engineering in ZnO By Doping with 3d Transition Metal Ions. (3rd April 2011)

• Record Type: Journal Article
• Authors: Joseph, D. Paul; Venkateswaran, C.
• Other Names: Moshammer Robert Academic Editor.
• Is Part Of: Journal of atomic, molecular, and optical physics. Volume 2011(2011)
• Publication Date: 2011-04-03
• Subjects: Nuclear physics -- Periodicals; Physical optics -- Periodicals; Molecules -- Periodicals; Atoms -- Periodicals; Atoms; Molecules; Nuclear physics; Physical optics; Periodicals; Electronic journals; 539.7
• DOI: 10.1155/2011/270540
• Languages: English
• ISSNs: 1687-9228

Abstract

Abstract : Bulk Zn0.95 TM0.05 O (TM = Cr, Mn, Fe, Co, and Ni) were synthesized by the standard ceramic method and explored for variation in their band gap energies using Diffuse Reflectance Spectroscopy in the ultraviolet-visible region. Phase quantification and compositional studies were performed using Rietveld analysis of the X-Ray Diffraction patterns, Scanning Electron microscopy, and Energy Dispersive X-Ray Analysis. Due to 3d transition ion doping, the samples have brilliant colors, and the absorption edge of Zn0.95 TM0.05 O was found to shift towards the visible and ultraviolet-visible region. The blue and red shifts in band gaps observed for various transition metal ion-doped ZnO are discussed.