Photodetectors Based on MoS<sub>2</sub>/MAPbBr<sub>3</sub> van der Waals Heterojunction
Fanxu Meng, Zhongquan Xu, Yonghong Zeng, Changhao Wang, Yanan Zou, S. Wageh, Ahmed A. Al‐Ghamdi, Zhinan Guo, Han Zhang
Abstract
In this letter, a new approach to construct van der Waals heterojunction photodetectors is presented, that MoS<sub>2</sub> flakes are transferred to the surface of MAPbBr<sub>3</sub> single crystals. Effective charge transfer process is demonstrated at MoS<sub>2</sub>/MAPbBr<sub>3</sub> interface, leading to a responsivity of 68.7 A/W at 1 V bias with an illumination of 0.20 mW/cm<sup>2</sup> at 532 nm. By combining the absorption band of both MoS<sub>2</sub> and MAPbBr<sub>3</sub>, the inherent long-wavelength filtering capability with a cut-off at 655 nm is obtained for the photodetector.
Topics & Concepts
PhotodetectorHeterojunctionvan der Waals forceResponsivityOptoelectronicsMaterials scienceAbsorption (acoustics)PhotoconductivityOpticsPhysicsMoleculeQuantum mechanics2D Materials and ApplicationsPerovskite Materials and ApplicationsMXene and MAX Phase Materials