Plasmon-induced thermoelectric effect in graphene (Conference Presentation)

Rupert F. Oulton; Viktoryia Shautsova; Themistoklis Sidiropoulos; Nicola G. Black; Adam M. Gilbertson; Stefan A. Maier; Lesley F. Cohen

doi:10.1117/12.2511465

8 March 2019 Plasmon-induced thermoelectric effect in graphene (Conference Presentation)

Rupert F. Oulton, Viktoryia Shautsova, Themistoklis Sidiropoulos, Nicola G. Black, Adam M. Gilbertson, Stefan A. Maier, Lesley F. Cohen

Author Affiliations +

Proceedings Volume 10920, 2D Photonic Materials and Devices II; 109200E (2019) https://doi.org/10.1117/12.2511465
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Graphene has emerged as a promising material for photonics and optoelectronics due to its potential for ultrafast and broad-band photodetection. The photoresponse of graphene junctions is characterized by two competing photocurrent generation mechanisms: a built-in field driven photovoltaic effect and a more dominant hot- carrier-assisted photothermoelectric (PTE) effect. The hot-carrier PTE effect is understood to rely on abrupt variations in the Seebeck coefficient through the graphene doping profile. A second PTE effect can occur across a homogeneous graphene channel in the presence of an electronic temperature gradient. Here, we report on the latter effect facilitated by strongly localised plasmonic heating of graphene carriers in presence of nanostructured electrical contacts resulting in electronic temperatures of the order of 2000 K. At a certain gate bias, the plasmon-induced PTE photocurrent contribution can be isolated. In this regime, the device effectively operates as a sensitive electronic thermometer and as such represents an enabling technology for the development of hot carrier based plasmonic devices.

Conference Presentation

Citation Download Citation

Rupert F. Oulton, Viktoryia Shautsova, Themistoklis Sidiropoulos, Nicola G. Black, Adam M. Gilbertson, Stefan A. Maier, and Lesley F. Cohen "Plasmon-induced thermoelectric effect in graphene (Conference Presentation)", Proc. SPIE 10920, 2D Photonic Materials and Devices II, 109200E (8 March 2019); https://doi.org/10.1117/12.2511465

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available