Piezophototronic Effect in Single-Atomic-Layer MoS<sub>2</sub> for Strain-Gated Flexible Optoelectronics.

Wu, Wenzhuo; Wang, Lei; Yu, Ruomeng; Liu, Yuanyue; Wei, Su-Huai; Hone, James; Wang, Zhong Lin · Adv Mater · 2016

basic_science · Level V

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Abstract

Strain-gated flexible optoelectronics are reported based on monolayer MoS<sub>2</sub> . Utilizing the piezoelectric polarization created at the metal-MoS<sub>2</sub> interface to modulate the separation/transport of photogenerated carriers, the piezophototronic effect is applied to implement atomic-layer-thick phototransistor. Coupling between piezoelectricity and photogenerated carriers may enable the development of novel optoelectronics.