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/Job opportunities/Exploring Pixels for the Future Imager

Exploring Pixels for the Future Imager

PhD - Leuven | More than two weeks ago

This topic is to investigate

The workhorse of today's CMOS Image Sensor technology is the so-called 4T pixel.  At its heart reside highly specialized semiconductor components such as the pinned photodiode and transfer gate, which are essential to reach low dark current and noise.  Continued development over the past 15 years has perfectioned this technology and state-of-the-art imagers operate in the photon shot-noise limit, the theoretical limit of classical photography.  Unfortunately, requirement of smaller size pixel for higher resolution imagers limit the amount of light entering the pixel which ends up with poor image quality. Based on our 30+ years of experience building CMOS imagers, imec strives to be at the forefront these new developments.

Thin-film materials (suchas colloidal Quantum Dots or Organics) are a promising alternative for future imaging applications with advantages of higher absorption coefficient, tunable spectral range up to SWIR while still be monolithically integrated directly on top of the CMOS read-out. At IMEC, different thin-film imager sensors are being developed, which use the concept of stacked photoactive layers to enable image sensors with unprecedented performance figures.

Imec is soliciting enthusiastic PhD candidates to acquire and extend the state-of-the-art in CMOS image sensors.  The goal of this PhD is to develop pixel devices and technologies to advance next generation consumer image sensors.  A thorough literature study will be a first step to investigate different device concepts, explore their limits and potential and identify promising new avenues.  PhD student’s role will be the design and validation of new pixel devices using TCAD, layout of test structures, implementation of the pixels into imec imager platforms in collaboration with our technology and circuit experts. The development of dedicated measurement techniques and the characterization of the fabricated devices will allow the candidate to demonstrate his research work through publications and conferences.



Required background: Electrical engineering, material science, solid-state physics, or related

Type of work: 20% literature, 40% pixel simulation and design, 40% experimental work

Supervisor: Paul Heremans

Daily advisor: Jiwon Lee

The reference code for this position is 2020-090. Mention this reference code on your application form.

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