Au6S2 monolayer sheets: metallic and semiconducting polymorphs

doi:10.1039/c7mh00461c

CAS OpenIR > 中科院上海应用物理研究所2011-2019年

	Au6S2 monolayer sheets: metallic and semiconducting polymorphs
	Wu, QS; Xu, WW; Qu, BY; Ma, L; Niu, XH; Wang, JL; Zeng, XC
	2017
Source Publication	MATERIALS HORIZONS
ISSN	2051-6347
Volume	4 Issue:6 Pages:1085-1091
Subtype	期刊论文
Abstract	Gold-sulfur interfaces, including self-assembled monolayers of thiol molecules on gold surfaces, thiolate-protected gold nanoclusters, and gold sulfide complexes, have attracted intensive interest due to their promising applications in electrochemistry, bioengineering, and nanocatalysis. Herein, we predict two hitherto unreported twodimensional (2D) Au6S2 monolayer polymorphs, named as G-Au6S2 and T-Au6S2. The global-minimumG-Au(6)S(2)monolayer can be viewed as a series of [-S-Au-](n) and [-Au4-](n) chains packed together in parallel. The metastable T-Au6S2 monolayer resembles the widely studied T-MoS2 monolayer structure with each Mo atom substituted with an octahedral Au-6 cluster, while the S atomis bondedwith three Au atoms in a l3 bridging mode. The G-Au6S2 monolayer is predicted to be metallic. The T-Au6S2 monolayer is predicted to be a semiconductor with a direct bandgap of 1.48 eV and high carrier mobility of 2721 cm(2) V-1 s(-1), B10 times higher than that of semiconducting H-MoS2. Moreover, the T-Au6S2 monolayer can absorb sunlight efficiently over almost the entire solar spectrum. These properties render the G-and T-Au6S2 monolayers promising materials for advanced applications in microelectronics and optoelectronics.
Keyword	Theoretical Prediction Global Minimum Gold Clusters Decanuclear Transformation Aurophilicity Nanoparticles Nanoclusters Transistors
DOI	10.1039/c7mh00461c
Indexed By	SCI
WOS Keyword	THEORETICAL PREDICTION ; GLOBAL MINIMUM ; GOLD ; CLUSTERS ; DECANUCLEAR ; TRANSFORMATION ; AUROPHILICITY ; NANOPARTICLES ; NANOCLUSTERS ; TRANSISTORS
Language	英语
WOS ID	WOS:000413945100010
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/28562
Collection	中科院上海应用物理研究所2011-2019年
Recommended Citation GB/T 7714	Wu, QS,Xu, WW,Qu, BY,et al. Au6S2 monolayer sheets: metallic and semiconducting polymorphs[J]. MATERIALS HORIZONS,2017,4(6):1085-1091.
APA	Wu, QS.,Xu, WW.,Qu, BY.,Ma, L.,Niu, XH.,...&Zeng, XC.(2017).Au6S2 monolayer sheets: metallic and semiconducting polymorphs.MATERIALS HORIZONS,4(6),1085-1091.
MLA	Wu, QS,et al."Au6S2 monolayer sheets: metallic and semiconducting polymorphs".MATERIALS HORIZONS 4.6(2017):1085-1091.

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