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Weak Van der Waals Stacking, Wide-Range Band Gap, and Raman Study on Ultrathin Layers of Metal Phosphorus Trichalcogenides

Du, Ke-zhao, Wang, Xing-zhi, Liu, Yang, Hu, Peng, Utama, M. Iqbal Bakti, Gan, Chee Kwan, Xiong, Qihua, Kloc, Christian·2016·ACS Nano

Abstract

2D semiconducting metal phosphorus trichalcogenides, particularly the bulk crystals of MPS3 (M = Fe, Mn, Ni, Cd and Zn) sulfides and MPSe3 (M = Fe and Mn) selenides, have been synthesized, crystallized and exfoliated into monolayers. The Raman spectra of monolayer FePS3 and 3-layer FePSe3 show the strong intralayer vibrations and structural stability of the atomically thin layers under ambient condition. The band gaps can be adjusted by element choices in the range of 1.3-3.5 eV. The wide-range band gaps suggest their optoelectronic applications in a broad wavelength range. The calculated cleavage energies of MPS3 are smaller than that of graphite. Therefore, the monolayers used for building of heterostructures by van der Waals stacking could be considered as the candidates for artificial 2D materials with unusual ferroelectric and magnetic properties.

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Crossref · 10.1021/acsnano.5b05927

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Metadata

Authors
Du, K.-Z., Wang, X.-Z., Liu, Y., Hu, P., Utama, M. I. B., Gan, C. K., Xiong, Q., & Kloc, C.
Venue
ACS Nano
Published
2015-12-04
Volume
10
Issue
2
Pages
1738-1743
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2174861091
Cited by
569
References
2
FWCI
11.06
Type
journal article
Language
en
Open access
closed

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