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Hybrid van der Waals SnO/MoS 2 Heterojunctions for Thermal and Optical Sensing Applications
Author(s) -
Wang Zhenwei,
He Xin,
Zhang XiXiang,
Alshareef Husam N.
Publication year - 2017
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201700396
Subject(s) - materials science , rectification , heterojunction , responsivity , tin oxide , optoelectronics , thermal stability , van der waals force , molybdenum disulfide , tin , nanotechnology , chemical engineering , photodetector , molecule , doping , electrical engineering , organic chemistry , chemistry , metallurgy , engineering , voltage
Emerging van der Waals heterojunctions (vdWH) containing 2D materials have shown exciting functionalities that surpass those of traditional devices based on bulk materials. In this Communication, a report on the properties of a 2D sulfide/oxide hybrid vdWH based on n‐type molybdenum disulfide (MoS 2 ) and p‐type tin monoxide (SnO) is presented, with promising rectification, thermal‐sensing, and photosensing performance. Specifically, the hybrid SnO/MoS 2 vdWH shows static rectification ratio of 2 × 10 2 with ideality factor of 2.3, and can operate at 100 Hz with good stability. The vdWH shows good temperature stability with reversible and reproducible current levels up to 110 °C, indicating its potential for thermal sensing applications. The sensitivity of current variation is calculated to be 0.0144 dec °C −1 . Finally, maximum responsivity of 8.17 mA W −1 and external quantum efficiency of 2.14% have been achieved in photovoltaic measurements. The results suggest that MoS 2 –SnO hybrid vdWH are promising for various sensing applications.