High temperature synthesis and characterization of ultrathin tellurium nanostructures
Abstract
Thin tellurium (Te) has been predicted as a potential two dimensional system exhibiting superior thermoelectric and electrical properties. Here, we report the synthesis of high quality ultrathin Te nanostructures and the study of their electrical properties at room temperature. High quality ultrathin Te nanostructures are obtained by high temperature vapor phase deposition on c-plane sapphire substrates. The obtained nanostructures are as thin as 3 nm and exhibit α-Te phase with trigonal crystal structure. Room temperature electrical measurements show significantly higher electrical conductivity compared to prior reports of Te in bulk form or in nanostructure form synthesized by low temperature vapor deposition or wet chemical methods. Furthermore, these nanostructures exhibit high field effect hole mobility comparable to black-phosphorous measured previously under similar conditions.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1570295
- Report Number(s):
- SAND-2019-10117J
Journal ID: ISSN 2166-532X; 678888
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- APL Materials
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 8; Journal ID: ISSN 2166-532X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Sapkota, Keshab R., Lu, Ping, Medlin, Douglas L., and Wang, George T. High temperature synthesis and characterization of ultrathin tellurium nanostructures. United States: N. p., 2019.
Web. doi:10.1063/1.5109899.
Sapkota, Keshab R., Lu, Ping, Medlin, Douglas L., & Wang, George T. High temperature synthesis and characterization of ultrathin tellurium nanostructures. United States. https://doi.org/10.1063/1.5109899
Sapkota, Keshab R., Lu, Ping, Medlin, Douglas L., and Wang, George T. Thu .
"High temperature synthesis and characterization of ultrathin tellurium nanostructures". United States. https://doi.org/10.1063/1.5109899. https://www.osti.gov/servlets/purl/1570295.
@article{osti_1570295,
title = {High temperature synthesis and characterization of ultrathin tellurium nanostructures},
author = {Sapkota, Keshab R. and Lu, Ping and Medlin, Douglas L. and Wang, George T.},
abstractNote = {Thin tellurium (Te) has been predicted as a potential two dimensional system exhibiting superior thermoelectric and electrical properties. Here, we report the synthesis of high quality ultrathin Te nanostructures and the study of their electrical properties at room temperature. High quality ultrathin Te nanostructures are obtained by high temperature vapor phase deposition on c-plane sapphire substrates. The obtained nanostructures are as thin as 3 nm and exhibit α-Te phase with trigonal crystal structure. Room temperature electrical measurements show significantly higher electrical conductivity compared to prior reports of Te in bulk form or in nanostructure form synthesized by low temperature vapor deposition or wet chemical methods. Furthermore, these nanostructures exhibit high field effect hole mobility comparable to black-phosphorous measured previously under similar conditions.},
doi = {10.1063/1.5109899},
journal = {APL Materials},
number = 8,
volume = 7,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 2019},
month = {Thu Aug 01 00:00:00 EDT 2019}
}
Web of Science
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