journal article·2022-02-25

Anisotropic Properties of Tellurium Nanoflakes Probed by Polarized Raman and Transient Absorption Microscopy: Implications for Polarization-Sensitive Applications

Cong Wang, Pengzhi Wang, Shengyao Chen, Wen Wen, Wenqi Xiong, Zhenzhou Liu, Yifan Liu, Jiaqi He, Yongsheng Wang

ACS Applied Nano Materials· Volume 5· Issue 2
Publisher page

Abstract

Recently, the two-dimensional (2D) elemental material tellurium (Te) has drawn considerable attention, since it possesses high transport properties, wide broadband absorption, excellent thermoelectric properties, and prominent air stability. However, the anisotropic properties and carrier dynamics of this material are less stated. Here, Te nanoflakes are prepared by the hydrothermal method. Highly anisotropic properties are illustrated by polarized Raman spectra and transient absorption spectroscopic measurements as well as density functional theory (DFT) calculations. Photocarrier dynamincs are probed by temporally resolved transient measurements with an exciton lifetime of 25 ps. These results imply that Te can be treated as a competitive material for further anisotropic devices and applications.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Chalcogenide Semiconductor Thin Films · 2D Materials and Applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China

GBA branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510700, China

Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China

CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100190, China

Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China

School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, Inner Mongolia, People’s Republic of China

Funding

Natural Science Foundation of Beijing Municipality · Central University Basic Research Fund of China · National Natural Science Foundation of China

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