Investigation of optical transition energy in copper phthalocyanine by transmission, reflection and photoreflectance spectroscopy

被引：23

作者：

Wojdyla, Michal ^{[1
]}

Derkowska, Beata ^{[1
]}

Bala, Waclaw ^{[1
]}

Bratkowski, Artur ^{[1
]}

Korcala, Andrzej ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Inst Phys, PL-87100 Torun, Poland

来源：

OPTICAL MATERIALS | 2006年 / 28卷 / 8-9期

关键词：

copper phthalocyanine (CuPc); photoreflectance; reflection; transmission; absorption; refractive index;

D O I：

10.1016/j.optmat.2005.04.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thin layer of copper phthalocyanine (CuPc) deposited on glass substrate was investigated by transmission (T), reflection (R) and sensitive modulated photoreflectance (PR) spectroscopy. All measurements were carried out in 400-1200 nm spectral region at room temperature. The energy of observed transitions and its broadening parameter were determined by fitting Aspnes formula to photoreflectance spectrum. The absorption coefficient alpha (and the extinction coefficient k) was directly found from the transmission spectrum and treat with the help of multioscillator Lorentz model modified by the Lorentz-Lorenz formula. Spectral distribution of complex refractive index and dielectric constants (real epsilon(1) and imaginary epsilon(2) part) were also found from reflection and transmission spectra. Model with two oscillators was used to fit the experimentally observed optical functions of copper phthalocyanine (CuPc). (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：1000 / 1005

页数：6

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