Detection of change in fluorescence between reactive cyan and the yellow fluorophores using a-SiC: H multilayer transducers

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

Research output: Contribution to journalArticle

Abstract

Optical colour sensors based on multilayered a-SiC:H heterostructures can act as voltage controlled optical filters in the visible range. In this article we investigate the application of these structures for Fluorescence Resonance Energy Transfer (FRET) detection, The characteristics of a-SiC:H multilayered structure are studied both theoretically and experimentally in several wavelengths corresponding to different fluorophores. The tunable optical p-i(a-SiC:H)-n/p-i(a-Si:H)-n heterostructureswere produced by PECVD and tested for a proper fine tuning in the violet, cyan and yellow wavelengths. The devices were characterized through transmittance and spectral response measurements, under different electrical bias and frequencies. Violet, cyan and yellow signals were applied in simultaneous and results have shown that they can be recovered under suitable applied bias. A theoretical analysis supported by numerical simulation is presented.

Original languageEnglish
Pages (from-to)8657-8662
Number of pages6
JournalJournal Of Nanoscience And Nanotechnology
Volume11
Issue number10
Publication statusPublished - 2011

Keywords

  • Electrical Simulation
  • FRET Detection
  • Multispectral Structures
  • Optical Transducer

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