Journal article
Atomically Thin Gallium Nitride for High-Performance Photodetection
SK Jain, N Syed, S Balendhran, SAT Abbas, RT Ako, MX Low, C Lobo, A Zavabeti, BJ Murdoch, G Gupta, M Bhaskaran, KB Crozier, SP Russo, T Daeneke, S Walia
Advanced Optical Materials | Published : 2023
Abstract
Gallium nitride (GaN) technology has matured and commercialised for optoelectronic devices in the ultraviolet (UV) spectrum over the last few decades. Simultaneously, atomically thin materials with unique features have emerged as contenders for device miniaturization. However, the lack of successful techniques to produce ultra-thin GaN prevents access to these new predicted properties. Here, this important gap is addressed by printing millimeter-large ultra-thin GaN nanosheets (NS) (≈1.4 nm) using a simple two-step process that simultaneously introduces nitrogen point defects. This extends the photoelectrical spectral response from UV (280 nm) to near infrared (NIR) (1080 nm). The GaN-based ..
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Grants
Awarded by Australian Government
Funding Acknowledgements
S.K.J would like to acknowledge the Joint RMIT-AcSIR PhD scholarship program for financial assistance. This work was performed in part at the Micro Nano Research Facility at RMIT University and the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Facilities and technical support from the RMIT Microscopy and Microanalysis Facility, a linked laboratory of Microscopy Australia, are acknowledged. S.W. acknowledges project support through the ARC Discovery Projects Scheme (DP220100020). S.P.R. acknowledges the support of the Australian Government through the Australian Research Council (ARC) under the Centre of Excellence scheme (CE170100026). This work was also supported by computational resources provided by the Australian Government through the National Computational Infrastructure National Facility and the Pawsey Supercomputer Centre. N.S. recognizes the support of the McKenzie Postdoctoral Fellowship from the University of Melbourne. M.B. and K.B.C. acknowledge the support of the Australian Government through the ARC under the Centre of Excellence scheme (CE200100010). The authors would like to acknowledge Mark Lockrey and Mehran Kianinia for assistance with the cathodoluminescence and PL measurements and Prof. Sharath Sriram for the useful discussions.