Synthesis and Characterization of Transition Metal Ions Doped Zinc Oxide Based Nanoparticles

Abstract

ZnO has received significant attention for various optoelectronic devices newlineincluding light emitting devices, solar cells, photodetectors etc. ZnO due to its wide newlineenergy band gap, melting point, thermal conductivity, inexpensive, transparency newlinepossess unique structural, optical, physical chemical, electrical, magnetic and thermal newlineproperties. These remarkable properties form the basis for motivation of device newlineminiaturization. Large effort has been focussed on synthesis, characterization and newlinedevice applications of ZnO nanomaterials. In present work, an attempt is made to newlineimprove the properties of pure ZnO nanoparticles. For that the research work mainly newlineconcentrated on tuning structural and optical properties of ZnO nanoparticles newlineincluding crystalline size, morphology, band gap and luminescence properties of ZnO newlinenanoparticles which can be further utilized as building material in fabrication of newlineoptoelectronic devices for enhancing device performance. newlineIn this research work pure and doped ZnO nanoparticles were synthesized newlineusing simple, inexpensive, environment friendly sol-gel method. Pure ZnO newlinenanoparticles were fabricated using ZnCl2 and KOH in ethanol medium. The newlineinfluence of precursors on properties of ZnO nanoparticles were analyzed for ZnO newlinenanoparticles synthesized from Zn(NO3)2 and two different precursors KOH and newlineNaOH in alkaline medium. The properties of ZnO nanoparticles were tuned by newlineincorporating dopants into ZnO lattice. The transition metal ions (Al, Cu) were newlineintroduced into ZnO lattice by using same method. The crystalline size, morphology, newlinecompositional, optical absorption and emission properties of pure and doped ZnO newlinenanoparticles were determined by performing various spectroscopic characterizations. newlineAl doped ZnO (AZO) and Cu doped ZnO (CZO) nanoparticles were synthesized newlineusing the same procedure. newline