Electric and Photovoltaic Behavior of a Few-Layer α-MoTe2 /MoS2 Dichalcogenide Heterojunction.

Pezeshki, Atiye; Shokouh, Seyed Hossein Hosseini; Nazari, Tavakol; Oh, Kyunghwan; Im, Seongil · Adv Mater · 2016

basic_science · Level V

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Abstract

Mo-based van der Waals heterojunction p-n diodes with p-type α-MoTe2 and n-type MoS2 are fabricated on glass, and demonstrate excellent static and dynamic device performances at a low voltage of 5 V, with an ON/OFF current ratio higher than 10(3) , ideality factors of 1.06, dynamic rectification at a high frequency of 1 kHz, high photoresponsivity of 322 mA W(-1) , and an external quantum efficiency of 85% under blue-light illumination.