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

• Published in: ACS nano Vol. 10; no. 2; pp. 1738 - 1743
• Main Authors: Du, Ke-zhao, Wang, Xing-zhi, Liu, Yang, Hu, Peng, Utama, M. Iqbal Bakti, Gan, Chee Kwan, Xiong, Qihua, Kloc, Christian
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 23.02.2016
• Subjects: two-dimensional semiconductors; cleavage energy; metal phosphorus trichalcogenides; Raman spectroscopy; band gap

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 s...