Zinc Oxide Nanocrystals

Synthesis And Characterisation of Sn Doped Zinc Oxide Nanocrystals

Birendra kumar Rajwar

Mahua chakraborty, Anima ghosh

Dr. R. Thangavel

Indian School of Mines, Dhanbad, India [e-mail] Authors Name/s per 2nd Affiliation (Author) line 1 (of Affiliation): dept. name of organization line 2-name of organization, acronyms acceptable line 3-City, Country line 4-e-mail address if desired

Abstract—The synthesis of Sn doped ZnO nanocrystals were grown by using solvothermal method and maintained the temperature at 80°C for 24 hrs. In this method thermal decomposition of organometallic compound [Zn (CH3COO)2. 2H2O] in different organic solvents for the preparation of pure and Sn doped ZnO are used. The structure and optical properties of grown nanocrystalline powder were characterized by X-ray

0.1M of Zinc acetate dehydrate [Zn(CH3COO)2.2H2O] was dissolved in 40ml absolute ethanol under stirring at room temperature and 0.2M of sodium hydroxide (NaOH) was also dissolved in 10ml water under stirring at room temperature and then mixed in the Zn(CH3COO)2.2H2O solution. Then 0.004M PVP(poly vinyle pyrrolidone) was put into the reaction mixture. The resulting solution was stirred for several minutes. The solution was then transferred to polypropylene vessel, then sealed and heated in temperature-controlled autoclave at 800C for 24 hour. After cooling to room temperature, the white powder was precipitated and then washed with absolute ethanol several times to dissolve other impurities. Finally, the powder was dried under vacuum at 600C overnight and determined in terms of their structure, morphology and optical properties. Same procedure was followed for the preparation of 5%, 10% and 15% Sn doped ZnO nanoparticles only concentration of Zinc acetate dehydrate [Zn(CH3COO)2.2H2O] was changed according to Sn concentration and Tin chloride dihydrate [SnCl2.2H2O] was used as a