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Electronic and optical properties of novel carbon allotropes

Journal Article · · Carbon
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [4];  [4];  [5]
  1. Fudan Univ., Shanghai (China)
  2. Fudan Univ., Shanghai (China); Key Lab. for Information Science of Electromagnetic Waves (MoE), Shanghai (China); Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  4. National Taiwan Univ., Taipei (Taiwan)
  5. National Center for High-Performance Computing, Hsinchu (Taiwan); National Chung Hsing Univ., Taichung (Taiwan)
The vibrational properties, electronic structures and optical properties of novel carbon allotropes, such as monolayer penta-graphene (PG), double-layer PG and T12-carbon, were studied by first-principles calculations. Results of phonon calculations demonstrate that these exotic carbon allotropes are dynamically stable. The bulk T12 phase is an indirect-gap semiconductor having a quasiparticle (QP) bandgap of ~5.19 eV. When the bulk material transforms to a two-dimensional (2D) phase, the monolayer and double-layer PG become quasi-direct gap semiconductors with smaller QP bandgaps of ~4.48 eV and ~3.67 eV, respectively. Furthermore, the partial charge density analysis indicates that the 2D phases retain part of the electronic characteristics of the T12 phase. The linear photon energy-dependent dielectric functions and related optical properties including refractive index, extinction coefficient, absorption spectrum, reflectivity, and energy-loss spectrum were also computed and discussed. Additionally, the chemical stability of monolayer PG and the electronic and optical properties of double-side hydrogenated monolayer PG were also investigated. Furthermore, the results obtained from our calculations are beneficial to practical applications of these exotic carbon allotropes in optoelectronics and electronics.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1249348
Alternate ID(s):
OSTI ID: 1334846
Report Number(s):
IS-J--8968; PII: S0008622316300665
Journal Information:
Carbon, Journal Name: Carbon Journal Issue: C Vol. 101; ISSN 0008-6223
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Chemical Functionalization of Pentagermanene Leads to Stabilization and Tunable Electronic Properties by External Tensile Strain journal January 2017
First-principles investigation of adsorption behaviors of small molecules on penta-graphene journal September 2018
Boron‐ and nitrogen‐doped penta‐graphene as a promising material for hydrogen storage: A computational study journal May 2019
A first-principles study of stable few-layer penta-silicene journal January 2016
The effect of oxidation on the electronic properties of penta-graphene: first-principles calculation journal January 2019
Two novel superhard carbon allotropes with honeycomb structures journal October 2019

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