The optical spectra of carbon-based thin films measured by the photothermal deflection spectroscopy (PDS)

Z. Remes, Tuan T. Pham, M. Varga, A. Kromka, J. Stuchlik, H. B. Mao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Our photothermal deflection spectroscopy (PDS) setup allows to measure simultaneously the absolute values of the optical transmittance T, reflectance R and absorptance A spectra of thin layers on glass substrates in the spectral range from ultraviolet to near infrared light with the typical spectral resolution 5 nm in the ultraviolet, 10 nm in visible and 20 nm in the near infrared region. The PDS setup provides the dynamic detection range in the optical absorptance up to 4 orders of magnitude. Here we demonstrate the usability of this setup by comparing the optical absorbance on a series of the carbon layer and nanocrystalline diamond (NCD) thin layers deposited on glass substrates by using the magnetron sputtering and the microwave based surface wave-discharge in linear antenna chemical vapor deposition (CVD) processes, respectively. The defect-induced localized states in the energy gap are observed in all carbon layers as well as in NCD.

Original languageEnglish
Title of host publicationNANOCON 2013 - Conference Proceedings, 5th International Conference
PublisherTANGER Ltd.
Pages405-409
Number of pages5
ISBN (Electronic)9788087294475
StatePublished - 2013
Event5th International Conference NANOCON 2013 - Brno, Czech Republic
Duration: 16 Oct 201318 Oct 2013

Publication series

NameNANOCON 2013 - Conference Proceedings, 5th International Conference

Conference

Conference5th International Conference NANOCON 2013
Country/TerritoryCzech Republic
CityBrno
Period16/10/1318/10/13

Keywords

  • Amorphous carbon
  • CVD
  • Magnetron sputtering
  • Nanocrystalline diamond
  • Optical spectroscopy

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