Optical Parameters and Absorption of Azo Dye and Its Metal-Substituted Compound Thin Films |
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作者姓名: | 魏斌 吴谊群 顾冬红 干福熹 |
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作者单位: | ShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,POBox800-211,Shanghai201800 |
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摘 要: | We determine the complex refractive indices N(N= n-ik), dielectric constants ε(ε=ε1 - iε2), and absorption coefficients a of a new azo dye 2-(6-methyl-2-benzothlazolyazo)-5-diethylaminophenol(MBADP)]-doped polymer and its nickel- and zinc-substituted compounds(Ni-MBADP and Zn-MBADP) spin-coated thin films from a scan-ning ellipsometer in the wavelength 400-700 nm region. Metal chelation strongly (about one times) enhances the optical and dielectric parameters at the peaks and results in a large bathochromic shift (50-60nm) of absorption band. Bathochromic shift of Ni-MBADP is about 1Ohm larger than that of Zn-MBADP due to different spatialconfigurations formed in the metal-azo complexes.
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关 键 词: | 光参量 偶氮染料 金属-偶氮复合物 复合薄膜 光吸收 光学性质 非线性光学 |
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