CMOS, Graphene and Quantum Dots: New Horizons for Sensor Development

In his presentation at the sensor conference ‘Sense of Contact 19’, Stijn Goossens of the Institute of Photonic Sciences in Barcelona, will explain the concept for a broadband image sensor based on the monolithic integration of a CMOS integrated circuit with graphene.

Integrated circuits based on CMOS -complementary metal-oxide semiconductors- are at the heart of the technological revolution of the past 40 years, as these have enabled compact and low cost micro-electronic circuits and imaging systems. However, the diversification of this platform into applications other than microcircuits and visible light cameras has been impeded by the difficulty to combine other semiconductors than silicon with CMOS.

In this concept for a broadband image sensor the graphene is covered with colloidal quantum dots to sensitize it to UV, visible and infrared light (300 – 2000 nm). This demonstration of a broadband graphene-CMOS image sensor is a major leap towards 3d integrated circuits based on 2d materials and Si-CMOS that can perform even more complex tasks than Si-CMOS alone.

Furthermore, Stijn Goossens will show a prototypewellness monitor based on graphene colloidal quantum dot hybrid detectors. They leveraged graphene’s flexible and transparent properties to create a wearable device that is conformal to the human body so that it can extract vital signs such as heart rate, breathing rate and oxygen saturation more reliably than conventional devices.

December 13th
10.45-11.15 hrs. Lecture C-1.1
Graphene as Enabler for Broadband Image Sensors Integrated with CMOS and Flexible Platforms

Stijn Goossens, ICFO, The Institute of Photonic Devices, Barcelona