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Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition
Published on: August 29, 2017
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Preparation and optical parameter characterization of two aldehyde derivative thin films for photonic applications by
Raveendra Melavanki1, S Vaijayanthimala1, Basappa Chanabasappa Yallur2
1Department of Physics, M S Ramaiah Institute of Technology Bangaluru-560054, Karnataka, India.
Summary
This study doped poly(methyl methacrylate) films with novel aldehyde derivatives to enhance optical properties for photonics applications. Doping altered optical parameters, showing potential for advanced photonic devices.
Area of Science:
- Materials Science
- Polymer Science
- Optoelectronics
Background:
- Poly(methyl methacrylate) (PMMA) is a versatile polymer with optical applications.
- Developing new materials with tunable optical properties is crucial for photonics.
- Aldehyde derivatives offer potential for modifying polymer characteristics.
Purpose of the Study:
- To investigate the effect of doping PMMA films with two novel aldehyde derivatives on their optical properties.
- To explore the potential of these doped films for photonics applications.
- To analyze changes in optical parameters with varying doping concentrations.
Main Methods:
- Thin films of PMMA were prepared using the drop casting method.
- Films were doped with 2-bromomalonaldehyde and 5,6-dihydroimidazo[2,1-b]thiazole-2-carbaldehyde at various concentrations.
- Optical characterization included UV-Vis absorption, fluorescence spectroscopy, and Fourier transform infrared (FTIR) spectroscopy.
Main Results:
- Absorption spectra revealed changes in optical properties upon doping.
- Key optical parameters like refractive index, extinction coefficient, and band gap energy were calculated and analyzed.
- Fluorescence emission spectra showed doping-induced modifications.
- FTIR analysis indicated changes in peak values and intensity due to doping.
Conclusions:
- Doping PMMA films with the synthesized aldehyde derivatives significantly modifies their optical properties.
- The observed changes suggest potential applications in photonics.
- Further research can explore specific photonic device integration.
