2022
DOI: 10.1039/d2nr01609e
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Lateral transition-metal dichalcogenide heterostructures for high efficiency thermoelectric devices

Abstract: Monolayer transition-metal dichalcogenides (TMDC) have emerged as promising candidates for thermoelectric applications due to their large effective mass and low thermal conductivity. In this article, we study the thermoelectric performance...

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Cited by 14 publications
(5 citation statements)
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References 61 publications
(72 reference statements)
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“…Finding materials with a low thermal conductivity (κ) is a necessary step to create thermoelectric (TE) devices able to efficiently scavenge electrical power from waste heat. In this context, monolayer transition metal dichalcogenides (TMDC) have emerged as promising candidates [1] since they also exhibit large charge-carrier effective masses. Both factors contribute to raising the dimensionless thermoelectric figure of merit (zT ), the key descriptor of thermoelectric performance.…”
Section: Introductionmentioning
confidence: 99%
“…Finding materials with a low thermal conductivity (κ) is a necessary step to create thermoelectric (TE) devices able to efficiently scavenge electrical power from waste heat. In this context, monolayer transition metal dichalcogenides (TMDC) have emerged as promising candidates [1] since they also exhibit large charge-carrier effective masses. Both factors contribute to raising the dimensionless thermoelectric figure of merit (zT ), the key descriptor of thermoelectric performance.…”
Section: Introductionmentioning
confidence: 99%
“…The booming research on van der Waals materials brings enormous opportunities for the post-silicon IC technologies because of their unique physical and chemical properties. Layered materials involving insulators, semiconductors, and metals offer promising candidates to fulfill this goal. , Moreover, their atomic thinness and dangling-free surface facilitate the construction of van der Waals heterostructures in either lateral or vertical fashions. These new-fashioned heterostructures create a paradigm for interface engineering with designable optoelectronic properties, further broadening their applications in solid-state electronics and optoelectronics. , So far, however, those van der Waals building blocks mostly rely on two-dimensional (2D) components, which are principally assembled through a mechanical exfoliation or direct synthesis process. , Among those, transition-metal dichalcogenides (TMDs), for example, MoS 2 and WS 2 , have emerged as the widely studied 2D van der Waals materials with rich functionalities, including a tunable band structure, good mechanical flexibility, high catalytic activity, anti-magnetism, flame retardance, and so on. …”
Section: Introductionmentioning
confidence: 99%
“…The photodetector is a semiconductor device that converts light signals into electrical signals by releasing conductive carriers . The performance of photodetectors established on 2D materials has been massively investigated in the past decade, yet several challenges should be well addressed before their commercialization. , First, limited incident light (monolayer, absorption efficiency ≈ 5% for visible light) can be absorbed by the atomic thin body thickness of 2D semiconductors, thereby generating a low photocurrent and greatly limiting the overall performance of the device . Second, such a low dimensionality of electron systems within 2D semiconductors is anticipated for an enhancement of light–matter interactions, but simultaneously the change in the surrounding dielectric environment and the residual surface states or impurities may have a significant impact on the carrier transport behaviors in 2D channels .…”
Section: Introductionmentioning
confidence: 99%