Raman spectra of bi2te3
Webb19 sep. 2014 · Normalized Raman spectra of the 830 nm-thick Bi 2 Te 3 layer measured on an as-grown spot with low excitation power (symbols) and after 3 h of exposure to increased excitation (solid line). Dashed line: the spectrum of the 200 nm-thick Te layer. Download figure: Standard image High-resolution image WebbHere we report on Landau level spectroscopy in magnetic fields up to 34 T performed on a thin film of the topological insulator Bi2Te3 epitaxially …
Raman spectra of bi2te3
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WebbInterlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies … Webb10 maj 2012 · The temperature dependence of the Raman spectra of Bi 2 Te 3 and Bi 0.5 Sb 1.5 Te 3 thermoelectric films was investigated. The temperature coefficients of the E …
WebbHere, we combine in situ Raman spectroscopy and theoretical calculations to elucidate the mechanism of HER catalytic performance enhanced by high-index facets on Ti@TiO 2 … WebbTo investigate the thermal properties of the Bi2Te3 nanostructure, a nondestructive technique based on temperature dependent Raman mapping was carried out. The …
Webb4 aug. 2015 · Since Bi 4 Te 3 and Bi 2 Te 3 have a low thermal conductivity and a low melting point, it is essential to control the laser power and irradiation time to avoid local heating effects (LHE) and melting-induced oxidation during the measurements. WebbDownload scientific diagram (a) PL spectrum of Bi2Te3 single crystal and mechanically exfoliated few layers. Green and red colors identify spectrum of bulk and few layers, …
WebbRaman spectroscopy as a nanometrology tool for identification of FQL films of topological insulators and for assessing their quality [30]. Extending our previous investigation, in …
WebbAround 60% of the energy used in processes is wasted as heat. Thermoelectric (TE) materials convert temperature gradients into an electric voltage. Since the work of Dresselhaus and Hicks, traditional TE semiconductors have been nanostructured to achieve improved TE conversion efficiencies. In this work the band-gap evolution on … how to add a new category in phorestWebbRaman spectrum displays very sharp and clear modes at 102 cm-1 and 134cm-1 with FWHM less than 4cm-1. If your research needs doping in Bi2Te3, we can also incorporate Ca, Nb, Ni, and Au dopants in Bi2Te3 … how to add a new category in mintWebb19 feb. 2016 · The Raman spectra of the latter corresponds to the one for bulk Bi2Te3. The intensity of these Raman peaks are clearly correlated to the Te content. In order to … meters to feet inches chartWebbWe have investigated two-dimensional nanostructures of the topological insulators Bi2Se3 and Bi2Te3 by means of temperature and magnetic field dependent Raman spectroscopy. how to add a new card to paypalBismuth telluride is a well-studied topological insulator. Its physical properties have been shown to change at highly reduced thicknesses, when its conducting surface states are exposed and isolated. These thin samples are obtained through either epitaxy or mechanical exfoliation. Epitaxial growth methods such as molecular beam epitaxy and metal organic chemical vapor deposition are common methods of obtaining thin Bi2Te3 samples. The stoichiometry of sampl… how to add a new circuitWebb2 mars 2012 · We report results of the micro-Raman spectroscopy study of the “graphene-like” exfoliated few-quintuple layers of Bi 2 Te 3, Bi 2 Se 3, and Sb 2 Te 3. It is found that … how to add a new campaign in salesforceWebb@article{Liang2011RamanSI, title={Raman scattering investigation of Bi2Te3 hexagonal nanoplates prepared by a solvothermal process in the absence of NaOH}, author={Yujie Liang and Wenzhong Wang and Baoqing Zeng and Gu-ling Zhang and Jing Huang and Jin Li and Te Li and Yangyang Song and Xiuyu Zhang}, journal={Journal of Alloys and … how to add a new checking account in quicken