Crystal phase control in two-dimensional materials
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摘要:
It is the nature of crystals to exist in different polymorphs.The recent emergence of two-dimensional (2D) materials has evoked the discovery of a number of new crystal phases that are different from their bulk structures at ambient conditions,and revealed novel structure-dependent properties,which deserve in-depth understanding and further exploration.In this contribution,we review the recent development of crystal phase control in 2D materials,including group V and VI.transition metal dichalcogenides (TMDs),group IVA metal chalcogenides and noble metals.For each group of materials,we begin with introducing the various existing crystal phases and their structure-related properties,followed by a detailed discussion on factors that influence these crystal structures and thus the possible strategies for phase control.Finally,after summarizing the whole paper,we present the challenges and opportunities in this research direction.