Journal article
Ultrathin Ga2O3 Glass: A Large-Scale Passivation and Protection Material for Monolayer WS2
M Wurdack, T Yun, E Estrecho, N Syed, S Bhattacharyya, M Pieczarka, A Zavabeti, SY Chen, B Haas, J Müller, MN Lockrey, Q Bao, C Schneider, Y Lu, MS Fuhrer, AG Truscott, T Daeneke, EA Ostrovskaya
Advanced Materials | WILEY-V C H VERLAG GMBH | Published : 2021
Abstract
Atomically thin transition metal dichalcogenide crystals (TMDCs) have extraordinary optical properties that make them attractive for future optoelectronic applications. Integration of TMDCs into practical all-dielectric heterostructures hinges on the ability to passivate and protect them against necessary fabrication steps on large scales. Despite its limited scalability, encapsulation of TMDCs in hexagonal boron nitride (hBN) currently has no viable alternative for achieving high performance of the final device. Here, it is shown that the novel, ultrathin Ga2O3 glass is an ideal centimeter-scale coating material that enhances optical performance of the monolayers and protects them against f..
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Awarded by Fundacja na rzecz Nauki Polskiej
Funding Acknowledgements
This work was supported by the Australian Research Council (ARC) through the Centre of Excellence grant CE170100039. T.D. acknowledges funds received for the ARC DECRA Project DE190100100. C.S. gratefully acknowledges funding by the European Research Council (Project unLiMIt-2D, Grant No: 679288). B.H and J.M. acknowledge funding in the framework of the German Science Foundation (DFG) project "BerlinEM Network" (grant number KO2911/13-1) and SFB951 HIOS (project number 182087777), respectively. M.N.L. acknowledges funding by the ARC project LE180100030. M.P. acknowledges support by the Foundation for Polish Science (FNP) in the START programme. The authors are grateful to Dr. Aaron Elbourne for providing support with atomic force microscope measurements, to A/Prof. Sumeeet Walia and Dr. Daniel Gomzez for providing access to experimental equipment, to Dr. Alexey Chernikov for fruitful discussions, and to Mr. Wendi Ma for providing support with sample fabrication. The authors appreciate the use of the Australian National Fabrication Facility (ANFF) at its nodes in the Australian Capital Territory, Victoria, and New South Wales at University of Technology Sydney.