Journal article
The Acoustophotoelectric Effect: Efficient Phonon-Photon-Electron Coupling in Zero-Voltage-Biased 2D SnS2 for Broad-Band Photodetection
H Alijani, P Reineck, R Komljenovic, SP Russo, MX Low, S Balendhran, KB Crozier, S Walia, GR Nash, LY Yeo, AR Rezk
ACS Nano | AMER CHEMICAL SOC | Published : 2023
Abstract
Two-dimensional (2D) layered metal dichalcogenides constitute a promising class of materials for photodetector applications due to their excellent optoelectronic properties. The most common photodetectors, which work on the principle of photoconductive or photovoltaic effects, however, require either the application of external voltage biases or built-in electric fields, which makes it challenging to simultaneously achieve high responsivities across broad-band wavelength excitation─especially beyond the material’s nominal band gap─while producing low dark currents. In this work, we report the discovery of an intricate phonon-photon-electron coupling─which we term the acoustophotoelectric eff..
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Grants
Awarded by RMIT University
Funding Acknowledgements
The authors are grateful for access to, and the technical assistance associated with, the use of the equipment and facilities in the RMIT School of Engineering laboratories, the RMIT Micro/Nano Research Facility (MNRF), and the RMIT Microscopy & Microanalysis Facility (RMMF). A.R.R., L.Y.Y., S.W., and S.B. acknowledge funding through various Australian Research Council (ARC) Discovery Projects (A.R.R., L.Y.Y., DP180102110; S.W., DP220100020; S.B., DP210103428), whereas K.B.C. acknowledges support from the ARC Centre of Excellence for Transformative Meta-Optical Systems (CE200100010). P.R. is grateful for an ARC DECRA Fellowship (DE200100279) as well as the RMIT University Vice-Chancellor's Research Fellowship.