Effect of transition metal elements on the structural and optical properties of ZnO nanoparticles

Bulletin of materials science

S SAADATMAND²  RAMIN YOUSEFI¹  I KAZEMINEZHAD² 

[1] Department of Physics, Islamic Azad University (IAU), Masjed-Soleiman Branch, Masjed-Soleiman, Iran$$Department of Physics, Islamic Azad University (IAU), Masjed-Soleiman Branch, Masjed-Soleiman, IranDepartment of Physics, Islamic Azad University (IAU), Masjed-Soleiman Branch, Masjed-Soleiman, Iran$$;Nanotechnology Laboratory, Physics Department, Shahid Chamran University of Ahvaz, Ahvaz, Iran$$Nanotechnology Laboratory, Physics Department, Shahid Chamran University of Ahvaz, Ahvaz, IranNanotechnology Laboratory, Physics Department, Shahid Chamran University of Ahvaz, Ahvaz, Iran$$

关键词: TM-doped ZnO-NPs;    solâ€�?�gel method;    sizeâ€�?�strain method;    optical properties.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Undoped and transition metal (TM)-doped ZnO nanoparticles (Zn$_{0.98}$X$_{0.02}$O-NPs, X= Mn, Cr, Co and Fe) were synthesized from a metal nitrate precursor and gelatin by a sol�?�gel method. The compounds were synthesized at calcination temperatures of 550$^{circ}$C for 6 h. The synthesized undoped/doped ZnO-NPs were characterized by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). XRD results indicated that the sample products were crystalline with a hexagonal wurtzite phase. SEM images showed the ZnO-NPs nearly spherical shapes and a non-uniform shape for doped ZnO-NPs. The crystalline development in the ZnO-NPs was investigated by X-ray peak broadening. The size�?�strain plot (SSP) method was used to study the individual contributions of crystallite sizes and lattice strain of the undoped and doped ZnO-NPs. The obtained results showed that strain ofthe NPs plays an important role in peak broadening; moreover, the mean crystalline size of the undoped and doped ZnO-NPs estimated from the SEM and the SSP method was highly inter-correlated. Finally, optical properties ofthe samples were studied by a UV�?�Vis spectrometer.

【 授权许可】

Unknown