Interlayer interactions in anisotropic atomically thin rhenium diselenide
By Huan Zhao, Jiang-Bin Wu, Hongxia Zhong, Qiushi Guo, Xiaomu Wang, Fengnian Xia, Li Yang, P. Tan, Han Wang. Nano Reseach, 2015
168 citations recorded by the source corpus.
In this work, we study the interlayer phonon vibration modes, the layer-numberdependent optical bandgap, and the anisotropic photoluminescence (PL) spectra of atomically thin rhenium diselenide (ReSe2) for the first time. The ultralow frequency interlayer Raman spectra and the polarization-resolved high frequency Raman spectra in ReSe2 allow the identification of its layer number and crystal orientation. Furthermore, PL measurements show the anisotropic optical emission intensity of the material with its bandgap increasing from 1.26 eV in the bulk to 1.32 eV in the monolayer. The study of the layer-number dependence of the Raman modes and the PL spectra reveals relatively weak van der Waal’s interaction and two-dimensional (2D) quantum confinement in the atomically thin ReSe2. The experimental observation of the intriguing anisotropic interlayer interaction and tunable optical transition in monolayer and multilayer ReSe2 establishes the foundation for further exploration of this material in the development of anisotropic optoelectronic devices functioning in the near-infrared spectrum, which is important for many applications in optical communication and infrared sensing.
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/37c2a73f0e423463da83d214458be07d1510c39f
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In Materials Chemistry
Citations in the corpus
- Optoelectronic devices based on two-dimensional transition metal dichalcogenides (2016, background): “Additionally, TMDC materials such as ReS2 and ReSe2 have a unique distorted 1T structure with strongly anisotropic in-plane properties (Fig.”