The Effect of Infrared Light’s Power on the Infrared Spectra of Thin Films
Open Access
- 1 January 2019
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in World Journal of Condensed Matter Physics
- Vol. 09 (01), 1-21
- https://doi.org/10.4236/wjcmp.2019.91001
Abstract
There are numerous evidences that a relationship exists between the average power P of electromagnetic waves and the mechanical motion of the objects interacting with them. We investigate the effects of infrared (IR) light’s average power P on the transmission Fourier transform infrared (FTIR) spectra of thin cubic Yb2O3 and rhombohedral LaAlO3 films deposited on silicon via atomic layer deposition. We find that different values of P of the IR light displace the minima of the absorption bands. This effect is reproducible in different sets of experiments and in different spectrometers. To interpret the experimental findings, we use the law of conservation of energy. We find a correlation among the energy of the IR waves and the number, moment of inertia, and vibrational/rotational frequency of the bonds involved in the vibrational or rotational motion. The law of conservation of energy unveils that larger values of P of the IR light and lower wavenumbers of the resonances involve a larger number of crystal bonds. One practical application of our approach is that it suggests a way to improve the sensitivity of the FTIR spectra of thin crystalline films in the far IR region.Keywords
This publication has 22 references indexed in Scilit:
- Position-dependent and millimetre-range photodetection in phototransistors with micrometre-scale graphene on SiCNature Nanotechnology, 2017
- Conversion of infrared light into usable energyPublished by SPIE-Intl Soc Optical Eng ,2016
- Peak intensity measurement of relativistic lasers via nonlinear Thomson scattering.Optics Letters, 2012
- Progress and future directions for atomic layer deposition and ALD-based chemistryMRS Bulletin, 2011
- Optical and magnetic characterisation of Co3+and Ni3+in LaAlO3: interplay between the spin state and Jahn–Teller effectJournal of Physics: Condensed Matter, 2011
- X-ray absorption spectroscopy study of Yb2O3 and Lu2O3 thin films deposited on Si(100) by atomic layer depositionNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2006
- Atomic-layer deposition of Lu2O3Applied Physics Letters, 2004
- Infrared response of vitreous titanium dioxide films with anatase short-range orderJournal of Applied Physics, 2002
- Electric Dipole Radiation from Spinning Dust GrainsThe Astrophysical Journal, 1998
- The Binary Rare Earth OxidesChemical Reviews, 1998