C72: A novel low energy and direct band gap carbon phase

2020 ◽  
Vol 384 (16) ◽  
pp. 126325 ◽  
Author(s):  
Jian-Li Ma ◽  
Dan-Li Song ◽  
Yi-Long Wu ◽  
Zhi-Fen Fu ◽  
Jian-Ping Zhou ◽  
...  
Keyword(s):  
Band Gap ◽  
Low Energy ◽  
Carbon Phase ◽  
Direct Band Gap ◽  
Direct Band

scholarly journals Direct and quasi-direct band gap silicon allotropes with remarkable stability

2016 ◽  
Vol 18 (14) ◽  
pp. 9682-9686 ◽  
Author(s):  
Chaoyu He ◽  
Chunxiao Zhang ◽  
Jin Li ◽  
Xiangyang Peng ◽  
Lijun Meng ◽  
...  
Keyword(s):  
Solar Cell ◽  
Band Gap ◽  
Low Energy ◽  
Solar Cell Application ◽  
Direct Band Gap ◽  
Direct Band

Promising low energy direct or quasi-direct band gap semiconductors for solar cell application.

scholarly journals Direct and quasi-direct band gap silicon allotropes with low energy and strong absorption in the visible for photovoltaic applications

2020 ◽  
Vol 18 ◽  
pp. 103271 ◽  
Author(s):  
Wei Zhang ◽  
Changchun Chai ◽  
Qingyang Fan ◽  
Yanxing Song ◽  
Yintang Yang
Keyword(s):  
Band Gap ◽  
Low Energy ◽  
Strong Absorption ◽  
Direct Band Gap ◽  
Photovoltaic Applications ◽  
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.

Theoretical Derivations of a Direct Band Gap Semiconductor of SiC Doped with Ge

2014 ◽  
Vol 44 (1) ◽  
pp. 167-176 ◽  
Author(s):  
Adit Ghosh ◽  
Chandrika Varadachari
Keyword(s):  
Band Gap ◽  
Direct Band Gap ◽  
Direct Band

Atomically Thin Arsenene and Antimonene: Semimetal-Semiconductor and Indirect-Direct Band-Gap Transitions

2015 ◽  
Vol 54 (10) ◽  
pp. 3112-3115 ◽  
Author(s):  
Shengli Zhang ◽  
Zhong Yan ◽  
Yafei Li ◽  
Zhongfang Chen ◽  
Haibo Zeng
Keyword(s):  
Band Gap ◽  
Direct Band Gap ◽  
Direct Band

Strain-induced semimetal-to-semiconductor transition and indirect-to-direct band gap transition in monolayer 1T-TiS2

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83876-83879 ◽  
Author(s):  
Chengyong Xu ◽  
Paul A. Brown ◽  
Kevin L. Shuford
Keyword(s):  
Band Gap ◽  
Electronic Properties ◽  
Plane Strain ◽  
Material Properties ◽  
First Principles ◽  
Tensile Strain ◽  
First Principles Calculations ◽  
Direct Band Gap ◽  
Direct Band ◽  
Uniform Plane

We have investigated the effect of uniform plane strain on the electronic properties of monolayer 1T-TiS2using first-principles calculations. With the appropriate tensile strain, the material properties can be transformed from a semimetal to a direct band gap semiconductor.

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