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Your search keyword '"Helene Wehbe-Alause"' showing total 5 results
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5 results on '"Helene Wehbe-Alause"'

1. Nano-diffractive elements in BSI pixel CMOS image sensors: optical design and process integration co-optimization with pixel scaling

Author

Marios Barlas, Axel Crocherie, Felix Bardonnet, Quentin Abadie, Elodie Sungauer, Matteo Vignetti, Bastien Mamdy, Isobel Nicholson, Patrick Gros d'Aillon, Raul-Andres Bianchi, Gabriel Mugny, Dominique Golanski, Florian Domengie, Pascal Besson, Emilie Prevost, Linda Parmigiani, Jihane Arnaud, Helene Wehbe-Alause, Arnaud Tournier, Olivier Noblanc, and Krysten Rochereau

Published
2022
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3. Verilog-A model for avalanche dynamics and quenching in Single-Photon Avalanche Diodes

Author

G. Mugny, Denis Rideau, Philippe Dollfus, J.R. Manouvrier, J. Grebot, E. Lacombe, Helene Wehbe-Alause, V. Quenette, Bastien Mamdy, Marco G. Pala, Y. oussaiti, Christel Buj, A. Lopez, Megan Agnew, Centre de Nanosciences et de Nanotechnologies (C2N), and Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics::Instrumentation and Detectors, 02 engineering and technology, 01 natural sciences, law.invention, Computer Science::Hardware Architecture, law, Verilog-A, 0103 physical sciences, Hardware_INTEGRATEDCIRCUITS, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall], Electronic circuit, Diode, 010302 applied physics, Quenching, Physics, business.industry, 021001 nanoscience & nanotechnology, Chip, Photodiode, Picosecond, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, 0210 nano-technology, business, Pulse-width modulation
Abstract

We present a Verilog-A model accounting for the temporal avalanche buildup and its statistics in Single-Photon Avalanche Diodes (SPADs). This physics-based approach is compared to TCAD mixed-mode analyzing predictions, as well as measurements. The buildup that can be in the order of hundreds picoseconds, affects the statistical pulse width distribution, which is experimentally verified. Furthermore, we address in detail the voltage swing across the device during avalanche and its quenching, studying its impact on power consumption. This model can help a chip designer to optimize circuits for quenching the SPAD photodiode.

Published
2020
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4. Advances in 3D CMOS image sensors optical modeling: combining realistic morphologies with FDTD

Author

Sofiane Guissi, Daniel Sieger, Axel Crocherie, Denis Rideau, Calderon Stephane, B. Vianne, and Helene Wehbe-Alause

Subjects
010302 applied physics, Process modeling, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Finite-difference time-domain method, Topology (electrical circuits), 02 engineering and technology, Solid modeling, 021001 nanoscience & nanotechnology, 01 natural sciences, CMOS, 0103 physical sciences, Electronic engineering, Quantum efficiency, Sensitivity (control systems), Image sensor, 0210 nano-technology
Abstract

This paper describes an innovative methodology to investigate the relationship between device morphology and the optical performance of CMOS image sensors. By coupling a FDTD-based 3D Maxwell solver with silicon-accurate process modeling software, we have been able to analyze the sensitivity of image sensor quantum efficiency with respect to statistical variations in nm-scale device topology. Additionally, we studied pyramidal silicon structuration for quantum efficiency enhancement as proposed in [1].

Published
2019
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5. Challenges in CMOS‐based images

Author

Arnaud Tournier, L. Pinzelli, Francois Roy, D. Jeanjean, S. Hulot, F. Blanchet, Laurent Favennec, Didier Herault, C. Perrot, Francois Leverd, J.-P. Carrere, Helene Wehbe-Alause, S. Ricq, N. Cherault, P. Boulenc, C. Augier, and Maxime Gatefait

Subjects
Materials science, CMOS, business.industry, Optoelectronics, Image sensor, Condensed Matter Physics, business
Published
2013
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