Three transducers embedded into one single SiC photodetector: LSP direct image sensor, optical amplifier and Demux device

M Vieira, P Louro, M Fernandes… - Advances in …, 2011 - books.google.com
Amorphous Si/SiC photodiodes working as photo-sensing or wavelength sensitive devices
in the visible range, have been widely studied in the past for different applications (solar …

Use of a-SiC: H photodiodes in optical communications applications

P Louro, M Vieira, MA Vieira… - Advances in …, 2011 - books.google.com
Silica single mode optical fiber is widely used in long distance communication systems for
high speed data transmission (Gbit/s) because of its high bandwidth and low attenuation …

Stacked nipnip heterojunctions for image recognition

M Vieira, A Fantoni, M Fernandes, P Louro… - MRS Online …, 2003 - cambridge.org
This work aims to clarify possible improvements and physical limits of the Color Laser
Scanned Photodiode image sensor when used as high sensitive non-pixel image reader. A …

Image and color sensitive detector based on double pin/pin a-SiC: H photodiode

M Vieira, M Fernandes, P Louro, A Fantoni… - MRS Online …, 2005 - cambridge.org
A two terminal image and color sensitive detector based on two stacked sensing/switching
pin a-SiC: H diodes is presented. The imaging is performed in a write-read simultaneous …

Large area image sensing structures based on a-SiC: H: a dynamic characterization

M Fernandes, M Vieira, I Rodrigues… - Sensors and Actuators A …, 2004 - Elsevier
In recent works large area hydrogenated amorphous silicon p–i–n structures with low
conductivity doped layers were proposed as single element image sensors. The working …

Image capture devices based on p–i–n silicon carbides for biometric applications

M Vieira, M Fernandes, P Louro, Y Vygranenko… - Journal of non …, 2002 - Elsevier
The laser scanned photodiode (LSP) image sensor is optimized and used as a biometric
(fingerprint) reader. A laser light illuminates the fingerprint placed on a glass surface in front …

Optical multiplexer for short range communications

P Louro, M Vieira, MA Vieira, M Fernandes… - Physica E: Low …, 2009 - Elsevier
Multiplexers are useful tools for the transmission of signals that can share the same physical
transmission path. At the end of the connection it is necessary to have a demultiplexer that …

A new CLSP sensor for Image recognition and color separation

M Vieira, M Fernandes, A Fantoni, P Louro… - MRS Online …, 2002 - cambridge.org
Large area pin a-SiC: H heterostructures are used as LSP color sensors. For reading out the
color signals, three appropriated voltages have to be successively applied in order to …

Optoelectronic characterization of a-SIC: H stacked devices

P Louro, A Fantoni, M Fernandes, A Maçarico… - Journal of non …, 2004 - Elsevier
The aim of this work is the optoelectronic characterization of double p–i–n stacked devices
based on a-Si alloy materials, in order to evaluate their suitability in large area optical …

An amorphous SIC/SI image photodetector with voltage-selectable spectral response

P Louro, M Fernandes, A Fantoni, G Lavareda… - Thin Solid Films, 2006 - Elsevier
The sensitive devices are multilayer stacked structures p–i–n/p–i–n based on a-SiC: H and a-
Si: H between two transparent conductive contacts. The thickness and the absorption …