naa a22 4500 510816002 CHVBK 20180411083507.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11468-012-9441-6 doi (NATIONALLICENCE)springer-10.1007/s11468-012-9441-6 Detection of Change in Fluorescence Between Reactive Cyan and the Yellow Fluorophores Using a-SiC:H Multilayer Transducers [Elektronische Daten] [P. Louro, V. Silva, M. Vieira, M. Vieira] The transducer consists of a semiconductor device based on two stacked -i-n heterostructures that were designed to detect the emissions of the fluorescence resonance energy transfer between fluorophores in the cyan (470nm) and yellow (588nm) range of the spectrum. This research represents a preliminary study on the use of such wavelength-sensitive devices as photodetectors for this kind of application. The device was characterized through optoelectronic measurements concerning spectral response measurements under different electrical and optical biasing conditions. To simulate the fluorescence resonance energy transfer (FRET) pairs, a chromatic time-dependent combination of cyan and yellow wavelengths was applied to the device. The generated photocurrent was measured under reverse and forward bias to read out the output photocurrent signal. A different wavelength-biasing light was also superimposed. Results show that under reverse bias, the photocurrent signal presents four separate levels, each one assigned to the different wavelength combinations of the FRET pairs. If a blue background is superimposed, the yellow channel is enhanced and the cyan suppressed, while under red irradiation, the opposite behavior occurs. So, under suitable biasing light, the transducer is able to detect separately the cyan and yellow fluorescence pairs. An electrical model, supported by a numerical simulation, supports the transduction mechanism of the device. Springer Science+Business Media, LLC, 2012 Optical sensors nationallicence Semiconductors nationallicence Photodiodes nationallicence Louro P. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut Silva V. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut Vieira M. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut Plasmonics Springer US; http://www.springer-ny.com 8/1(2013-03-01), 139-142 1557-1955 8:1<139 2013 8 11468 https://doi.org/10.1007/s11468-012-9441-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-012-9441-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Louro P. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut NATIONALLICENCE 700 1- Silva V. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut NATIONALLICENCE 700 1- Vieira M. Electronics Telecommunication and Computer Department, ISEL, R. Conselheiro Emídio Navarro, 1949-014, Lisbon, Portugal aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/1(2013-03-01), 139-142 1557-1955 8:1<139 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer