4th International Conference onNanostructures-ICNS4 , 2012-03-12

Title : ( Effect of Zn Doping on Structural and Optical Properties ofFe3O4 Nanoparticles Prepared by Co-Precipitation Method )

Authors: Zahra Rezai Marand , Nasser Shahtahmassebi , Mahmood Rezaee Roknabadi , Mohammad Reza Housaindokht , M. Rezaee Roknabadi , Mitra Helmi Rashid Farimani , R. Etefagh ,

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Different Fe2O3/ZnO nanocomposites were prepared by a simple solid-state reaction method, using zinc acetate, α-Fe2O3 and sodium hydroxide at room temperature. The characterization results show that the morphology, crystalline size, Brunauer-Emmett-Teller (BET) surface area and optical absorption of the samples varied significantly with the Fe+3/Zn+2 ratios. The nanocomposites show two absorption edges at ultraviolet and visible region. The optical band gap values of these nanocomposites were calculated to be about 3.98-3.81eV and 2.75-2.98 eV, which show a red shift from that of pure ZnO. These red shifts are related to the formation of Fe s-levels below the conductive band edge of ZnO and effectively extend the absorption edge into the visible region. Here, the growth mechanisms have been proposed

Keywords

Fe2O3/ZnO; Optical properties;
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@inproceedings{paperid:1031053,
author = {Rezai Marand, Zahra and Shahtahmassebi, Nasser and Rezaee Roknabadi, Mahmood and Housaindokht, Mohammad Reza and M. Rezaee Roknabadi and Helmi Rashid Farimani, Mitra and R. Etefagh},
title = {Effect of Zn Doping on Structural and Optical Properties ofFe3O4 Nanoparticles Prepared by Co-Precipitation Method},
booktitle = {4th International Conference onNanostructures-ICNS4},
year = {2012},
location = {kish, IRAN},
keywords = {Fe2O3/ZnO; Optical properties; Photoluminescence},
}

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%0 Conference Proceedings
%T Effect of Zn Doping on Structural and Optical Properties ofFe3O4 Nanoparticles Prepared by Co-Precipitation Method
%A Rezai Marand, Zahra
%A Shahtahmassebi, Nasser
%A Rezaee Roknabadi, Mahmood
%A Housaindokht, Mohammad Reza
%A M. Rezaee Roknabadi
%A Helmi Rashid Farimani, Mitra
%A R. Etefagh
%J 4th International Conference onNanostructures-ICNS4
%D 2012

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