Talk 6.3: 1:30PM–2:45PM
| Session Name: | Photonic Systems and Quantum Information |
| Session Time: | 1:30PM–2:45PM |
| Author Name: | Jason Clifford |
| Author Email: | jason.clifford@utoronto.ca |
| Talk Title: | Colloidal Quantum Dot Sensitized Focal Plane Arrays for Ultrasensitive Visible and Infrared Imaging |
| Slides: | 6-3.ppt |
| Abstract: | Photon detection and imaging in the infrared (IR) typically requires semiconductor materials not suitable for implementing electronic signal processing nor lattice compatible with silicon. Thus, separate substrates are used to fabricate photodetector arrays and the signal processing electronics. Such solutions are complex, costly, and limit the size and total number of pixels in the arrays. Solution processed lead sulfide colloidal quantum dots (CQDs) have recently demonstrated exceptional capabilities as ultrasensitive detectors of infrared radiation. A novel strategy has been employed to integrate the CQDs directly with a commercial silicon signal processing circuit to realize an 80k pixel focal plane array (FPA) operating at 30 fps. This FPA is sensitive to both visible and IR light, demonstrating the feasibility of direct integration of nano-scale and micro-scale electronics in a single device. Due to its low cost and low complexity, this device presents new opportunities for applications in security, surveillance, and machine vision. |
| Research Group: | Photonics |
| Degree Program: | Ph.D. |
| Author Bio: | Jason Clifford received the B.A.Sc. degree in computer engineering in 2002, and the M.A.Sc. in electrical engineering in 2003, both from the University of British Columbia, Vancouver, Canada. He worked as a senior IC design engineer at Cypress Semiconductor, San Jose, USA, from 2003 to 2004. He is currently working towards a doctoral degree in electrical engineering in the photonics group at the University of Toronto, Toronto, Canada. His research interests include the design and fabrication of optoelectronic and electronic devices based on nanoscale semiconductor materials and the integration of these devices with conventional microelectronics. His master’s research was carried out under the supervision of Prof. David Pulfrey in UBC Nanoelectronics Group, a small group of electrical engineers focusing on computational solid-state device research. His thesis project involved the development of a self-consistent numerical model of bipolar transport in carbon nanotube field-effect transistors. His current research is being carried out under the supervision of Prof. Ted Sargent in the University of Toronto photonics group. The focus of his work is the development of infrared detectors and detector arras based on lead sulfide colloidal quantum dots. |