Theoretical investigation on harvesting thermal energy beyond the visible spectrum in Ta-doped monolayer MoS2

Fatima Rehman; Saira Khanam; Shahzad Ahmad; Qasim Mehmood; Usman Younis

doi:10.1117/12.3013453

7 June 2024 Theoretical investigation on harvesting thermal energy beyond the visible spectrum in Ta-doped monolayer MoS₂

Fatima Rehman, Saira Khanam, Shahzad Ahmad, Qasim Mehmood, Usman Younis

Author Affiliations +

Proceedings Volume 13027, Energy Harvesting and Storage: Materials, Devices, and Applications XIV; 1302707 (2024) https://doi.org/10.1117/12.3013453
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

To harvest both light and heat for sensor applications, we present a theoretical investigation using first-principles calculations on monolayer MoS² to exploit its electronic and optical properties, within and beyond the visible spectrum. By increasing doping concentrations of Ta in monolayer MoS², we achieve a modulating band gap to capture the entire lower energy visible spectrum, extending deep into the infrared region, in contrast to strain engineering where only corrections in band gap can take place. By calculating the Seebeck coefficient, we explore a heat-absorbing aspect of energy harvesting through a reduction in the band gap, dragging the operating wavelengths into the infrared region with a change in the direct nature of the band gap to an indirect while within the visible spectrum. The results provide comprehensive information and open up a way to employ Ta-doped monolayer MoS² in photovoltaic sensing applications.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fatima Rehman, Saira Khanam, Shahzad Ahmad, Qasim Mehmood, and Usman Younis "Theoretical investigation on harvesting thermal energy beyond the visible spectrum in Ta-doped monolayer MoS₂", Proc. SPIE 13027, Energy Harvesting and Storage: Materials, Devices, and Applications XIV, 1302707 (7 June 2024); https://doi.org/10.1117/12.3013453

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