Journal article
Large Area Ultrathin InN and Tin Doped InN Nanosheets Featuring 2D Electron Gases
Nitu Syed, Alastair Stacey, Ali Zavabeti, Chung Kim Nguyen, Benedikt Haas, Christoph T Koch, Daniel L Creedon, Enrico Della Gaspera, Philipp Reineck, Azmira Jannat, Matthias Wurdack, Sarah E Bamford, Paul J Pigram, Sherif Abdulkader Tawfik, Salvy P Russo, Billy J Murdoch, Kourosh Kalantar-Zadeh, Chris F McConville, Torben Daeneke
ACS NANO | AMER CHEMICAL SOC | Published : 2022
Abstract
Indium nitride (InN) has been of significant interest for creating and studying two-dimensional electron gases (2DEG). Herein we demonstrate the formation of 2DEGs in ultrathin doped and undoped 2D InN nanosheets featuring high carrier mobilities at room temperature. The synthesis is carried out via a two-step liquid metal-based printing method followed by a microwave plasma-enhanced nitridation reaction. Ultrathin InN nanosheets with a thickness of ∼2 ± 0.2 nm were isolated over large areas with lateral dimensions exceeding centimeter scale. Room temperature Hall effect measurements reveal carrier mobilities of ∼216 and ∼148 cm2 V-1 s-1 for undoped and doped InN, respectively. Further analy..
View full abstractGrants
Awarded by Australian Research Council (ARC) through the DECRA scheme
Awarded by Australian Research Council Centre of Excellence FLEET
Awarded by Australian Research Council Nanoscale Biophotonics
Awarded by Australian Research Council
Awarded by Australian Research Council Exciton Science
Funding Acknowledgements
Authors would like to thank RMIT University's Microscopy and Microanalysis Facility (RMMF), a linked laboratory of the Australian Microscopy and Microanalysis Research Facility (AMMRF), and the RMIT University's Micro Nano Research Facility (MNRF) for scientific and technical support. This work was performed in part at the Australian National Fabrication Facility (ANFF), a company established under the National Collaborative Research Infrastructure Strategy, through the La Trobe University Centre for Materials and Surface Science. T. Daeneke acknowledges funds received from the Australian Research Council (ARC) through the DECRA scheme (DE190100100). N. Syed recognizes the support of the McKenzie Fellowship from the University of Melbourne. This work was supported by the Australian Research Council Centre of Excellence FLEET (CE170100039), Exciton Science (CE170100026), and Nanos c a l e Biophotonics (CE140100003). A. Stacey, E. Della Gaspera, and P. Reineck acknowledge funds received from the Australian Research Council (ARC) through the DECRA scheme (DE190100336, DE170100174, and DE200100279, respectively). D. Creedon is supported by the Australian Research Council under Discovery Project Grant DP190102852. S. P. Russo and S. A. Tawfik acknowledge the support by computational resources provided by the Australian Government through NCI and Pawsey under the National Computational Merit Allocation Scheme and through the Pawsey Energy and Resources Merit Allocation Scheme. S. A. Tawfik recognizes the support of the Alfred Deakin Postdoctoral Research Fellowship from Deakin University. The authors thank Dr. Mark Edmonds and Prof. Phillip D.C. King for advice regarding the interpretation and modeling of 2DEGs.