Group-IV 2D materials beyond graphene on nonmetal substrates: Challenges, recent progress, and future perspectives

Miriam Galbiati, Nunzio Motta, Maurizio De Crescenzi, Luca Camilli*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The family of two-dimensional materials has been expanding rapidly over the last few years. Within it, a special place is occupied by silicene, germanene, and stanene due to their inherent compatibility with the existing semiconductor technology (notably for the case of silicene and germanene). Although obtaining them is not trivial due to the lack of layered bulk counterparts from which they could be mechanically exfoliated, they have been recently synthesized on a number of metallic substrates. The remarkable interaction between metals and these puckered materials, however, strongly modifies their intrinsic electronic properties, and also jeopardizes their integration into functional devices. In this context, first experimental efforts are now being devoted to the synthesis of silicene, germanene, and stanene on nonmetal substrates. Here, we review these pioneering works, present the ongoing debate, analyze, and discuss the major technical challenges and finally suggest possible novel solutions worth exploring.
Original languageEnglish
Article number041310
JournalApplied Physics Reviews
Volume6
Issue number4
Number of pages20
ISSN1931-9401
DOIs
Publication statusPublished - 2019

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