论文部分内容阅读
偶氮金属螯合物薄膜是一类新型光信息存储和光学非线性材料。通过旋涂法在单晶硅上制备了三种新型偶氮染料 :2 (4 甲基 2 噻唑基偶氮 ) 5 二乙基胺苯酚 (MTADP)掺杂聚合物 ,MTADP的镍螯合物 (Ni MTADP)和锌螯合物 (Zn MTADP)薄膜。利用宽谱扫描全自动椭圆偏振光谱仪测定了上述薄膜的椭偏光谱 ,获得了三种薄膜在 4 0 0～ 70 0nm波段的复折射率、复介电常量和吸收系数。两种金属螯合物薄膜的共振波长比非螯合物薄膜红移了 6 0～70nm ;光学常数和吸收系数在峰值的数值也发生了明显的变化。由于这两种螯合物具有不同的立体结构 ,Ni MTADP薄膜的共振波长比Zn MTADP有 10nm的红移。
Azo metal chelate films are a new class of optical information storage and optical nonlinear materials. Three kinds of new azo dyes were prepared on single crystal silicon by spin-coating: 2 (4 methyl 2 thiazolyl azo) 5 diethylenediamine phenol (MTADP) doped polymer, MTADP nickel chelate Ni MTADP) and zinc chelate (Zn MTADP) films. The ellipsometry spectra of the films were measured by a wide-spectrum scanning automatic ellipsometer. The birefringence, complex permittivity and absorption coefficient of the three films in the 400 ~ 700 nm band were obtained. The resonance wavelength of the two metal chelate films is shifted by 60-70nm compared with that of the non-chelate film. The values of optical constants and absorption coefficients also change obviously at the peak value. Due to the different three-dimensional structure of the two chelates, the resonance wavelength of the Ni MTADP film is shifted by 10 nm from the Zn MTADP.