作　　者： (）;

机构地区： Department of Physics, Federal University Oye Ekiti, Oye-Ekiti, Nigeria

出　　处： 《Journal of Semiconductors》 2017年第9期19-24,共6页

摘　　要： Cd1-xZnxS nanoparticles were grown on pre-cleaned glass substrates using microwave-assisted chemical bath deposition technique. Nanoparticles obtained by this method were smooth, uniform, good adherent, brownish yellow in color where the brightness of the yellow color nature decreases with increasing Zn^2＋ content. The elemental composition analysis confirmed that the nanoparticles comprise ofCd^2＋, Zn^2＋ and S^2-. Scanning elec- tron microscope images confirmed the surface uniformity of the Cdl-xZnxS nanoparticles devoid of any void, pinhole or cracks and covered the substrate well. The particle size also decreases with increasing Zn ion content. X-ray diffraction （XRD） indicates the hexagonal structure （002） without phase transition. The grain size decreases from 36.45 to 9.60 nm, dislocation density increases from 0.000745 to 0.01085 Line^2/m^2 and lattice parameter decreased from 6.868 to 6.155 nm with increasing Zn^2＋ content. The best transmittance of about 95% was achieved for x = 1.0. The nanoparticles showed reduction in the absorbance as Zn ion content increased. Four point probe revealed that the electrical resistivity increased from 1.51×10^10 to 6.67×10^10Ω·cm while electrical conductivity decreases from 6.62×10^-11 to 1.49×10^-11 （Ω·cm）-1 with increasing Zn2＋ content. The other electrical prop- erties such as sheet resistance increased from 1.52×10^8 to 1.58×10^8Ω, charge carrier mobility decreased from 0.777 to 0.0105 cm^2/（V.s） and charge carrier density increased from 1.06×10^12 to 3.95×10^12 cm^-3. Cd1-xZnxS nanoparticles were grown on pre-cleaned glass substrates using microwave-assisted chemical bath deposition technique. Nanoparticles obtained by this method were smooth, uniform, good adherent, brownish yellow in color where the brightness of the yellow color nature decreases with increasing Zn^2＋ content. The elemental composition analysis confirmed that the nanoparticles comprise ofCd^2＋, Zn^2＋ and S^2-. Scanning elec- tron microscope images confirmed the surface uniformity of the Cdl-xZnxS nanoparticles devoid of any void, pinhole or cracks and covered the substrate well. The particle size also decreases with increasing Zn ion content. X-ray diffraction （XRD） indicates the hexagonal structure （002） without phase transition. The grain size decreases from 36.45 to 9.60 nm, dislocation density increases from 0.000745 to 0.01085 Line^2/m^2 and lattice parameter decreased from 6.868 to 6.155 nm with increasing Zn^2＋ content. The best transmittance of about 95% was achieved for x = 1.0. The nanoparticles showed reduction in the absorbance as Zn ion content increased. Four point probe revealed that the electrical resistivity increased from 1.51×10^10 to 6.67×10^10Ω·cm while electrical conductivity decreases from 6.62×10^-11 to 1.49×10^-11 （Ω·cm）-1 with increasing Zn2＋ content. The other electrical prop- erties such as sheet resistance increased from 1.52×10^8 to 1.58×10^8Ω, charge carrier mobility decreased from 0.777 to 0.0105 cm^2/（V.s） and charge carrier density increased from 1.06×10^12 to 3.95×10^12 cm^-3.