Optical characterization of thin chalcogenide films by multiple-angle-of-incidence ellipsometry

Todorov, R.; Paneva, A.; Petkov, K.

doi:10.1016/j.tsf.2009.09.002

Cited by 30 publications

(28 citation statements)

References 60 publications

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“…6, the angle Φ 1 values of incidence of the MDMO-PPV polymer increase with increasing photon energy until about 2.38 eV, then they change very little with increasing photon energy and decrease with decreasing molarity. The Φ 1 values of the MDMO-PPV polymer are close to incidence values of some materials in the literature [41][42][43][44]. Similarly, the angle of refraction is calculated from well-known Snell's law [45]:…”

Section: Resultssupporting

confidence: 73%

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Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents

Gündüz

2015

Polym. Bull.

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The optical properties of the solutions of the MDMO-PPV light-emitting polymer were investigated. The maximum mass extinction coefficient values of the solutions of the MDMO-PPV for 6.640 and 3.014 µM were found to be 20.874 and 42.009 L g −1 cm −1 , respectively. The absorption band edge values of the solutions of the MDMO-PPV shifted from 2.149 to 1.987 eV with increasing molarity. To obtain lower E g values (2.020, 2.057, 2.083, 2.088 and 2.103 eV, respectively) of the MDMO-PPV can be preferred xylene, toluene, chlorobenzene, chloroform and tetrahydrofuran solvents, respectively. The E g of the solution of the MDMO-PPV was decreased with molarities and solvents. The refractive index values of the MDMO-PPV were controlled with various solvents. The optical parameters such as single oscillator energy, dispersion energy, M −1 , M −3 moments, optical oscillator strengths, linear static refractive index, optical linear susceptibility, third-order nonlinear susceptibility and nonlinear refractive index were calculated using Wemple-DiDomenico equation. The highest contrast was obtained with xylene, while the lowest contrast was obtained with chlorobenzene. The MDMO-PPV can be used in the fabrication of the metal-semiconductor contacts due to low optical band gap and suitable optical parameters. Also, the surface morphology properties of the MDMO-PPV polymer film were investigated.

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Section: Resultssupporting

confidence: 73%

“…It is observed that the refractive index of the MDMO-PPV polymer decreases with increasing wavelength and the refractive index can be changed with various solvents. The refractive index values of the MDMO-PPV are close to n values in the literature [41,43,44,54,[59][60][61].…”

Section: The Effects On Optical Parameters Of the Mdmo-ppv Polymer Ofsupporting

confidence: 84%

Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents

Gündüz

2015

Polym. Bull.

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“…We have demonstrated that the spectrophotometric and ellipsomeric methods offer a good accuracy for determination of the optical parameters of thin chalcogenide films from /30 to 2 ( is working wavelength) (Konstantinov et al 1998, Babeva et al 2001, Todorov et al 2010a. Results on the reflectance response of photonic crystals from chalcogenide glass/polymer (DeCorby et al, 2005;Kohoutek et al, 2007a) or chalcogenide glass/chalcogenide glass, e.g.…”

Section: Optical Methods For Control and Characterization Of Thin Filmentioning

confidence: 99%

Thin Chalcogenide Films for Photonic Applications

Todorov¹,

Tasseva²,

Babeva³

2012

Photonic Crystals - Innovative Systems, Lasers and Waveguides

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“…The optical constants are obtained by determination of optical phase angle using reflectance measurements at normal incidence and KK relations. The ellipsometric diagnostic method has been also paid attentions for the determinations of the optical constants of metal and dielectric films [38][39][40][41][42][43][44]. The ellipsometric method is with higher measurement accuracy in comparison with other methods.…”

Section: Introductionmentioning

confidence: 99%

Measurement method for high-temperature infrared optical constants of ZnS crystal materials in a multi-layer structure

Liu

2015

Infrared Physics & Technology

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Optical characterization of thin chalcogenide films by multiple-angle-of-incidence ellipsometry

Cited by 30 publications

References 60 publications

Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents

Optical properties of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] light-emitting polymer solutions: effects of molarities and solvents

Thin Chalcogenide Films for Photonic Applications

Measurement method for high-temperature infrared optical constants of ZnS crystal materials in a multi-layer structure

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