DEMUX SiC optical transducers for fluorescent proteins detection

M. Vieira, P. Louro, M. A. Vieira, M. Fernandes, J. Costa

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


This paper presents results on the optimization of multilayered a-SiC:H heterostructures that can be used as an optical transducer for fluorescent proteins detection. Stacked structures composed by p-i-n based a-SiC:H cells are used as wavelength selective devices, in the visible range. The transfer characteristics of the transducers are studied both theoretically and experimentally under several wavelength illuminations corresponding to different fluorophores and tested for a proper fine tuning in the violet, cyan and yellow wavelengths. The devices were characterized through spectral response measurements under different electrical and optical bias conditions and excitation frequencies. Results show that the output waveform is balanced by the wavelength and frequency of each input fluorescent signal, keeping the memory of the wavelength and intensity of the incoming optical carriers. To selectively recover a single wavelength a specific voltage or optical bias is applied.

Original languageEnglish
Title of host publicationCompound Semiconductors for Energy Applications and Environmental Sustainability - 2011
Number of pages6
Publication statusPublished - 1 Jan 2012
Event2011 MRS Spring Meeting - San Francisco, United States
Duration: 25 Apr 201129 Apr 2011


Conference2011 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco


  • Multi-layered
  • Optical transducers
  • Optical carriers
  • a-SiC:HBias conditions
  • Excitation frequency
  • Fine tuning
  • Fluorescent protein
  • Fluorescent signals


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