scholarly journals Role of Interchain Interaction in Determining the Band Gap of Trigonal Selenium: A Density Functional Theory Study with a Linear Combination of Bloch Orbitals

2014 ◽  
Vol 118 (33) ◽  
pp. 19294-19307 ◽  
Author(s):  
Masafuyu Matsui
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Linear Combination ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Interchain Interaction ◽  
Functional Theory

Density Functional Theory Study of the Role of an Carbon–Oxygen Single Bond Group in the NO–Char Reaction

2018 ◽  
Vol 32 (7) ◽  
pp. 7734-7744 ◽  
Author(s):  
Tong Zhao ◽  
Wenli Song ◽  
Chuigang Fan ◽  
Songgeng Li ◽  
Peter Glarborg ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Single Bond ◽  
Density Functional Theory Study ◽  
Functional Theory

Density Functional Theory Study on Energy Band Gap of Armchair Silicene Nanoribbons with Periodic Nanoholes

MRS Advances ◽  
2016 ◽  
Vol 1 (22) ◽  
pp. 1613-1618 ◽  
Author(s):  
Sadegh Mehdi Aghaei ◽  
Irene Calizo
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Energy Band ◽  
Quantum Confinement ◽  
Density Functional ◽  
Quantum Confinement Effect ◽  
Density Functional Theory Study ◽  
Energy Band Gap ◽  
Functional Theory ◽  
Silicene Nanoribbons

ABSTRACTIn this study, density functional theory (DFT) is employed to investigate the electronic properties of armchair silicene nanoribbons perforated with periodic nanoholes (ASiNRPNHs). The dangling bonds of armchair silicene nanoribbons (ASiNR) are passivated by mono- (:H) or di-hydrogen (:2H) atoms. Our results show that the ASiNRs can be categorized into three groups based on their width: W = 3P − 1, 3P, and 3P + 1, P is an integer. The band gap value order changes from “EG (3P − 1) < EG (3P) < EG (3P + 1)” to “EG (3P + 1) < EG (3P − 1) < EG (3P)” when edge hydrogenation varies from mono- to di-hydrogenated. The energy band gap values for ASiNRPNHs depend on the nanoribbons width and the repeat periodicity of the nanoholes. The band gap value of ASiNRPNHs is larger than that of pristine ASiNRs when repeat periodicity is even, while it is smaller than that of pristine ASiNRs when repeat periodicity is odd. In general, the value of energy band gap for ASiNRPNHs:2H is larger than that of ASiNRPNHs:H. So a band gap as large as 0.92 eV is achievable with ASiNRPNHs of width 12 and repeat periodicity of 2. Furthermore, creating periodic nanoholes near the edge of the nanoribbons cause a larger band gap due to a strong quantum confinement effect.

The role of catalysts in the decomposition of phenoxy compounds in coal: A density functional theory study

2018 ◽  
Vol 428 ◽  
pp. 541-548 ◽  
Author(s):  
Jiang-Tao Liu ◽  
Ming-Fei Wang ◽  
Zhi-Hua Gao ◽  
Zhi-Jun Zuo ◽  
Wei Huang
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory
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