Publications de Frédéric Zanella

High-efficiency fill factor recovery using refractive microlens arrays imprinted on 0.5–256 kpixel front-side illuminated SPAD imagers

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic, Vladimir Pesic, Tommaso Milanese, Scott Anthony Lindner, Frédéric Zanella

Silicon-based single-photon avalanche diodes (SPADs) implemented in front-side illuminated arrays and imagers have often suffered from fill factor limitations. The corresponding reduced sensitivity can be sometimes traded off with longer acquisition times ...

SPIE2023

Optical-stack optimization for improved SPAD photon detection efficiency

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic, Ekin Kizilkan, Rolando Ferrini, Scott Anthony Lindner, Arin Can Ülkü, Marc Schnieper, Frédéric Zanella

Single-photon avalanche diodes (SPADs) are direct photon-to-digital detectors that enable scalable arrays with Poisson-limited signal-to-noise ratio and picosecond timing resolution. However, SPAD detectors require a guard-ring structure to prevent lateral ...

2019

Submicrometer Organic Thin-Film Transistors: Technology Assessment Through Noise Margin Analysis of Inverters

Christian Enz, Jean-Michel Sallese, Rolando Ferrini, Franz Xaver Pengg, Nenad Marjanovic, Frédéric Zanella

In this paper, we propose a methodology to evaluate the potential of submicrometer organic thin-film transistors (OTFTs) with nanoimprinted gate and self-aligned source and drain contacts. In the first step, the dedicated static model we previously reporte ...

Institute of Electrical and Electronics Engineers2014

Organic thin-film transistors : from technologies to circuits

Frédéric Zanella

Organic molecules (i.e. carbon-based) have opened a new and rapidly-growing industrial field in the optoelectronic market bringing to this field a new dimension of thinness and flexibility. In this context, this thesis has focused on one particular buildin ...

EPFL2014

Design and modeling of self-aligned nano-imprinted sub-micrometer pentacene-based organic thin-film transistors

Christian Enz, Jean-Michel Sallese, Rolando Ferrini, Randoald Müller, Nenad Marjanovic, Frédéric Zanella

Sub-micrometer channel length (0.5 mu m) organic thin-film transistors (OTFTs) are demonstrated using a process flow combining nano-imprint lithography (NIL) and self-alignment (SA). A dedicated test structure was designed and samples were fabricated on 4- ...

Elsevier2013