New One-Dimensional Material Nb2 Se9 : Theoretical Prediction of Indirect to Direct Band Gap Transition due to Dimensional Reduction

2018 ◽  
Vol 13 (2) ◽  
pp. 1800517 ◽  
Author(s):  
Weon-Gyu Lee ◽  
Sudong Chae ◽  
You Kyoung Chung ◽  
Seungbae Oh ◽  
Jae-Young Choi ◽  
...  
Keyword(s):  
Theoretical Prediction ◽  
Band Gap ◽  
Dimensional Reduction ◽  
One Dimensional ◽  
Direct Band Gap ◽  
Direct Band

scholarly journals Indirect-To-Direct Band Gap Transition of One-Dimensional V2Se9: Theoretical Study with Dispersion Energy Correction

ACS Omega ◽  
2019 ◽  
Vol 4 (19) ◽  
pp. 18392-18397 ◽  
Author(s):  
Weon-Gyu Lee ◽  
Sudong Chae ◽  
You Kyoung Chung ◽  
Won-Sub Yoon ◽  
Jae-Young Choi ◽  
...  
Keyword(s):  
Band Gap ◽  
Theoretical Study ◽  
Dispersion Energy ◽  
One Dimensional ◽  
Direct Band Gap ◽  
Energy Correction ◽  
Direct Band

Novel 2D boron nitride with optimal direct band gap: A theoretical prediction

2021 ◽  
pp. 151929
Author(s):  
Feng-Yin Li ◽  
Dong-Chun Yang ◽  
Liang Qiao ◽  
Roberts I. Eglitis ◽  
Ran Jia ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Theoretical Prediction ◽  
Band Gap ◽  
Direct Band Gap ◽  
Direct Band

ChemInform Abstract: Dimensional Reduction of a Layered Metal Chalcogenide into a 1D Near-IR Direct Band Gap Semiconductor.

ChemInform ◽  
2012 ◽  
Vol 43 (28) ◽  
pp. no-no
Author(s):  
Yi-Hsin Liu ◽  
Spencer H. Porter ◽  
Joshua E. Goldberger
Keyword(s):  
Band Gap ◽  
Dimensional Reduction ◽  
Metal Chalcogenide ◽  
Direct Band Gap ◽  
Near Ir ◽  
Direct Band

Dimensional Reduction of a Layered Metal Chalcogenide into a 1D Near-IR Direct Band Gap Semiconductor

2012 ◽  
Vol 134 (11) ◽  
pp. 5044-5047 ◽  
Author(s):  
Yi-Hsin Liu ◽  
Spencer H. Porter ◽  
Joshua E. Goldberger
Keyword(s):  
Band Gap ◽  
Dimensional Reduction ◽  
Metal Chalcogenide ◽  
Direct Band Gap ◽  
Near Ir ◽  
Direct Band

Optical Studies of Poly (N-Carbazole) (PVK) Blending with Polyvinylpyrrolidone (PVP) Using Tauc/Davis-Mott Model

2013 ◽  
Vol 652-654 ◽  
pp. 527-531 ◽  
Author(s):  
A.N. Alias ◽  
T.I. Tunku Kudin ◽  
Z.M. Zabidi ◽  
M.K. Harun ◽  
Ab Malik Marwan Ali ◽  
...  
Keyword(s):  
Band Gap ◽  
Urbach Energy ◽  
Quartz Substrate ◽  
Optical Studies ◽  
Direct Band Gap ◽  
Mott Model ◽  
Blended Polymer ◽  
Electronic Parameters ◽  
Direct Band ◽  
Indirect Band Gap

The optical absorption spectra of blended poly (N-carbazole) (PVK) with polyvinylpyrrolidone (PVP) in various compositions are investigated. A doctor blade technique was used to coat the blended polymer on a quartz substrate. The electronic parameters such as absorption edge (Ee), allowed direct band gap (Ed), allowed indirect band gap (Ei), Urbach edge (Eu) and steepness parameter (γ) were calculated using Tauc/Davis-Mott Model. The results reveal that the Ee, Ed and Ei increase with increasing of PVP ratio. There also have variation changing in Urbach energy and steepness parameter.

Direct band gap optical emission from Ge islands grown on relaxed Si0.5Ge0.5/Si (100) substrate

2014 ◽  
Vol 115 (1) ◽  
pp. 013502 ◽  
Author(s):  
R. Aluguri ◽  
S. Manna ◽  
S. K. Ray
Keyword(s):  
Band Gap ◽  
Optical Emission ◽  
Direct Band Gap ◽  
Direct Band
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