Digital Repository

Two-dimensional ReS2: Solution to the unresolved queries on its structure and inter-layer coupling leading to potential optical applications

Show simple item record Gadde, Janardhan Rao en_US KARMAKAR, ANASUYA et al. en_US 2021-06-11T04:37:27Z 2021-06-11T04:37:27Z 2021-05 en_US
dc.identifier.citation Physical Review Materials, 5(5), 054006. en_US
dc.identifier.issn 2475-9953 en_US
dc.identifier.uri en_US
dc.description.abstract Over the last few years, ReS2 has generated a myriad of unattended queries regarding its structure, the concomitant thickness-dependent electronic properties, and its apparently contrasting experimental optical response. In this paper, with elaborate first-principles investigations, using density functional theory (DFT) and time-dependent DFT, we identify the structure of ReS2, which is capable of reproducing and analyzing the layer-dependent optical response. The theoretical results are further validated by an in-depth structural, chemical, optical, and optoelectronic analysis of the large-area ReS2 thin films, grown by the chemical vapor deposition (CVD) process. Micro-Raman, x-ray photoelectron spectroscopy, cross-sectional transmission electron microscopy, and energy-dispersive x-ray analysis have enabled the optimization of the uniform growth of the CVD films. The correlation between the optical and electronic properties was established by static photoluminescence and excited state transient absorption measurements. Sulfur vacancy-induced localized mid-gap states render a significantly long lifetime of the excitons in these films. The ionic gel top-gated photodetectors, fabricated from the as-prepared CVD films, exhibit a large photo-response of similar to 5 A/W and a remarkable detectivity of similar to 10(11) Jones. The outcome of this paper will be useful in promoting the application of vertically grown large-area films in the field of optics and opto-electronics. en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Field-Effect Transistors en_US
dc.subject Chemical-Vapor-Deposition en_US
dc.subject Large-Area en_US
dc.subject Crystal-Structure en_US
dc.subject Rhenium en_US
dc.subject Transitions en_US
dc.subject Dependence en_US
dc.subject Technetium en_US
dc.subject Efficient en_US
dc.subject Excitons en_US
dc.subject 2021-JUN-WEEK2 en_US
dc.subject TOC-JUN-2021 en_US
dc.subject 2021 en_US
dc.title Two-dimensional ReS2: Solution to the unresolved queries on its structure and inter-layer coupling leading to potential optical applications en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Physical Review Materials en_US
dc.publication.originofpublisher Foreign en_US

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Repository

Advanced Search


My Account