April 22 - 26, 2024
Seattle, Washington
May 7 - 9, 2024 (Virtual)
Symposium Supporters
2024 MRS Spring Meeting
EL02.11.02

A Path Toward Making Mid-Wave Infrared Sensing a Ubiquitous Technology

When and Where

May 7, 2024
8:15am - 8:45am
EL02-virtual

Presenter(s)

Co-Author(s)

Dong Kyun Ko1,Mohammad Mostafa Al Mahfuz1,Junsung Park1,Rakina Islam1

New Jersey Institute of Technology1

Abstract

Dong Kyun Ko1,Mohammad Mostafa Al Mahfuz1,Junsung Park1,Rakina Islam1

New Jersey Institute of Technology1
Reducing the size, weight, power consumption, and cost of infrared detectors can make the use of infrared sensing ubiquitous. In the technologically important spectral region of mid-wavelength infrared (MWIR = 3 - 5 μm), commercially available detectors suffer from the high cost associated with epitaxial growth and hybridization as well as the stringent requirement for cryogenic cooling, limiting their use to defense and space applications. The colloidal quantum dot is one of the potential materials candidate to overcome these limitations due to the availability of low-cost synthesis and wafer-scale device fabrication via solution processing. Infrared sensors based on colloidal quantum dots have been studied for decades, and harnessing the interband transition in these quantum-confined nanostructures has been the mainstream theme in optoelectronic research. More unique photophysical properties can be harnessed by utilizing the transitions within the conduction levels or valence levels, known as intraband (intersubband) transitions. In this presentation, we discuss the progress, challenges, and opportunities of MWIR sensors fabricated from Ag<sub>2</sub>Se intraband colloidal quantum dots, a heavy metal-free colloidal nanomaterial that has merits for wide-scale adoption in consumer and industrial sectors.

Keywords

quantum materials

Symposium Organizers

Yunping Huang, CU Boulder
Hao Nguyen, University of Washington
Nayon Park, University of Washington
Claudia Pereyra, University of Pennsylvania

Session Chairs

Emily Miura
Hao Nguyen

In this Session