Ultrathin Ga2O3 Glass: A Large-Scale Passivation and Protection Material for Monolayer WS2

Wurdack, M; Yun, T; Estrecho, E; Syed, N; Bhattacharyya, S; Pieczarka, M; Zavabeti, A; Chen, S-Y; Haas, B; Müller, J; Lockrey, MN; Bao, Q; Schneider, C; Lu, Y; Fuhrer, MS; Truscott, AG; Daeneke, T; Ostrovskaya, EA

Ultrathin Ga2O3 Glass: A Large-Scale Passivation and Protection Material for Monolayer WS2

Wurdack, M Yun, T Estrecho, E Syed, N Bhattacharyya, S Pieczarka, M Zavabeti, A Chen, S-Y Haas, B Müller, J Lockrey, MN Bao, Q Schneider, C Lu, Y Fuhrer, MS Truscott, AG Daeneke, T Ostrovskaya, EA

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Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Advanced materials (Deerfield Beach, Fla.), 2020, pp. e2005732
Issue Date:: 2020-12-04

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Field	Value	Language
dc.contributor.author	Wurdack, M
dc.contributor.author	Yun, T
dc.contributor.author	Estrecho, E
dc.contributor.author	Syed, N
dc.contributor.author	Bhattacharyya, S
dc.contributor.author	Pieczarka, M
dc.contributor.author	Zavabeti, A
dc.contributor.author	Chen, S-Y
dc.contributor.author	Haas, B
dc.contributor.author	Müller, J
dc.contributor.author	Lockrey, MN
dc.contributor.author	Bao, Q
dc.contributor.author	Schneider, C
dc.contributor.author	Lu, Y
dc.contributor.author	Fuhrer, MS
dc.contributor.author	Truscott, AG
dc.contributor.author	Daeneke, T
dc.contributor.author	Ostrovskaya, EA
dc.date.accessioned	2021-01-15T04:38:39Z
dc.date.available	2021-01-15T04:38:39Z
dc.date.issued	2020-12-04
dc.identifier.citation	Advanced materials (Deerfield Beach, Fla.), 2020, pp. e2005732
dc.identifier.issn	0935-9648
dc.identifier.issn	1521-4095
dc.identifier.uri	http://hdl.handle.net/10453/145448
dc.description.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 Ga<sub>2</sub> O<sub>3</sub> glass is an ideal centimeter-scale coating material that enhances optical performance of the monolayers and protects them against further material deposition. In particular, Ga<sub>2</sub> O<sub>3</sub> capping of monolayer WS<sub>2</sub> outperforms commercial-grade hBN in both scalability and optical performance at room temperature. These properties make Ga<sub>2</sub> O<sub>3</sub> highly suitable for large-scale passivation and protection of monolayer TMDCs in functional heterostructures.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation	http://purl.org/au-research/grants/arc/LE180100030
dc.relation.ispartof	Advanced materials (Deerfield Beach, Fla.)
dc.relation.isbasedon	10.1002/adma.202005732
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Ultrathin Ga2O3 Glass: A Large-Scale Passivation and Protection Material for Monolayer WS2
dc.type	Journal Article
utslib.location.activity	Germany
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-01-15T04:38:25Z
pubs.publication-status	Published

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 Ga₂ O₃ glass is an ideal centimeter-scale coating material that enhances optical performance of the monolayers and protects them against further material deposition. In particular, Ga₂ O₃ capping of monolayer WS₂ outperforms commercial-grade hBN in both scalability and optical performance at room temperature. These properties make Ga₂ O₃ highly suitable for large-scale passivation and protection of monolayer TMDCs in functional heterostructures.

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http://hdl.handle.net/10453/145448