Optical Constants of Palladium Phthalocyanine Derivative Thin Films

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（11）
• 页码范围: 1701-1702
• 页数: 2页
• 分类号: O4
• 语种: 英文

摘要

Ellipsometric parameters ora series of spin-coated thin films of palladium phthalocyanine derivatives with bromine and tetraalkoxyl substitutes (PdPc(OC8H17)4Brm, m = 0, 2, 3, 4) are determined from a rotating analyserpolarizer type of scanning ellipsometer. The optical, dielectric constants and absorption coefficients of the films in the 500-800nm wavelength region are reported. The results show that refractive index N (N = n- k),dielectric constant ε (ε =ε1 -ε2) and absorption coefficient α in the region 500-800nm are influenced by bromine atom substituted on the conjugated phthalocyanine ring regularly. It is found that there is approximately a linear relationship between the resonance absorption wavelengths of the films and the number of bromine atoms substituted on the phthalocyanine ring.