ELECTRON PARAMAGNETIC RESONANCE STUDIES OF DIMENSIONALITY OF POLYANILINE FILMS

The line shape analysis of electron paramagnetic resonance (EPR) spectra for low-dimensional solids are calculated. A comparison is carried out between the experimental EPR results of polyaniline samples and theoretical calculation. The dimension evolution of the samples from nonconducting to conducting states is obtained. It is found that the dimensional properties determined by EPR are in good accordance with those obtained using previous ellipsometric methods.     

Al-Y共掺杂ZnO透明导电薄膜制备及光电性能研究

 采用溶胶 凝胶法,在玻璃衬底上制备出Al-Y共掺杂的ZnO透明导电薄膜。X射线衍射(XRD)表明,Al-Y共掺杂ZnO透明导电薄膜为六角纤锌矿结构的多晶薄膜,且具有C轴择优取向。制备的Al-Y共掺杂ZnO薄膜电阻率最小值为1.63×10² Ω·cm,在可见光区(400-800 nm)平均透过率超过85 %。