Publications
Miniaturized Time-Resolved Fluorescence Spectrometer System Vrije Universiteit Brussel
Compact sub-nanosecond time-gated camera based on a new 64x64 Current-Assisted Photonic Sampler (CAPS) sensor with improved quantum efficiency Vrije Universiteit Brussel
An Overview of CMOS Photodetectors Utilizing Current-Assistance for Swift and Efficient Photo-Carrier Detection Vrije Universiteit Brussel
This review paper presents an assortment of research on a family of photodetectors which use the same base mechanism, current assistance, for the operation. Current assistance is used to create a drift field in the semiconductor, more specifically silicon, in order to improve the bandwidth and the quantum efficiency. Based on the detector and application, the drift field can be static or modulated. Applications include 3D imaging (both direct ...
Current-Assisted SPAD with Improved p-n Junction and Enhanced NIR Performance Vrije Universiteit Brussel
Single-photon avalanche diodes (SPADs) fabricated in conventional CMOS processes typically have limited near infra-red (NIR) sensitivity. This is the consequence of isolating the SPADs in a lowly-doped deep N-type well. In this work, we present a second improved version of the “current-assisted” single-photon avalanche diode, fabricated in a conventional 350 nm CMOS process, having good NIR sensitivity owing to 14 µm thick epilayer for photon ...
Compact time-resolved fluorescence spectrometer Vrije Universiteit Brussel
Existing fluorescence spectrometer systems are bulky and large optical setups and using intricate monochromators with movable parts or use ...
Current-Assisted Single Photon Avalanche Diode (CASPAD) Fabricated in 350 nm Conventional CMOS Vrije Universiteit Brussel
current-assisted single-photon avalanche diode (CASPAD) is presented with a large and deep absorption volume combined with a small p-n junction in its middle to perform avalanche trigger detection. The absorption volume has a drift field that serves as a guiding mechanism to the photo-generated minority carriers by directing them toward the avalanche breakdown region of the p-n junction. This drift field is created by a majority current ...