Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session M71: Optoelectronic and Device Applications of 2D Materials
8:00 AM–11:00 AM,
Wednesday, March 16, 2022
Room: Hyatt Regency Hotel -Jackson Park C
Sponsoring Unit: DMP
Chair: Pengpeng Zhang, Michigan State University
Abstract: M71.00011 : Giant Photoresponse enhancement in mixed-dimensional van der Waals heterostructure through dielectric engineering*
10:24 AM–10:36 AM
VRINDA N P
VRINDA N P
Vrinda Narayanan P
nearly three orders of magnitude enhancement in photoresponse was observed by modulating the surrounding dielectric environment. This huge enhancement is attributed to the easy separation of photogenerated carriers due to the screening of Coulomb interaction and also screening of the impurity potential, reducing the charge carrier scattering. In addition, there is a change in the overall bandgap of the heterostructure producing a lower energy barrier for the charge carriers.
*DST SERB Grant no. EMR/2016/005792 and partial funding support under the Indo-French Centre for the Promotion of Advanced Research (CEFIPRA), project no. 6104-2.DST, Government of India for INSPIRE fellowship (IF170119).
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700