scholarly journals Density Functional Theory Calculation of Band Gap of Iron (II) disulfide and Tellurium

2017 ◽  
Vol 3 (1) ◽  
pp. 41-46
Author(s):  
Arumona Edward Arumona ◽  
Amah A N

In this work, the band gap of Iron(II) disulfide and Tellurium were computed using the density functional theory with different meta-GGA functionals. The results showed that the meta-GGA functional M06L gave the closest value of the band gap as 0.96 eV compared to the experimental value of 0.95 eV for Iron(II) disulfide while the meta-GGA functional BJ06 gave the closest value of the band gap as 0.339 eV compared to the experimental value of     0.335 eV for Tellurium. This study showed that the meta-GGA functionals M06L and BJ06 can effectively predict the band gap of Iron(II)disulfide and Tellurium. In general, the use of meta-GGA functionals can be extended to compute the band gap of other semiconductors.

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69861-69868 ◽  
Author(s):  
Q. G. Jiang ◽  
W. C. Wu ◽  
J. F. Zhang ◽  
Z. M. Ao ◽  
Y. P. Wu ◽  
...  

Vacancy defects significantly depress the energy barrier for dissociative adsorption of H2 on silicene, which can open the band gap of silicene.


RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 18000-18007 ◽  
Author(s):  
Shiyou Li ◽  
Xiaopeng Li ◽  
Hongming Zhang ◽  
Liping Mao ◽  
Xiaoling Cui

The density functional theory calculation of the oxidative stability and reduction decomposition mechanism is quite an important factor for practical application.


RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61996-62004 ◽  
Author(s):  
Yan Tian ◽  
Li Wang ◽  
Hai-Zhu Yu

The structure–activity relationship of thioesters promoted by Pd(0) complex has been studied using the density functional theory calculation methods.


2016 ◽  
Vol 18 (4) ◽  
pp. 3322-3330 ◽  
Author(s):  
Ken-Huang Lin ◽  
Shin-Pon Ju ◽  
Jia-Yun Li ◽  
Hsin-Tsung Chen

Two CO oxidation reactions (CO + O2 → CO2 + O and CO + O → CO2) were considered in the Eley–Rideal (ER) reaction mechanism.


2021 ◽  
Vol 9 (12) ◽  
pp. 4316-4321
Author(s):  
L.-B. Meng ◽  
S. Ni ◽  
Z. M. Zhang ◽  
S. K. He ◽  
W. M. Zhou

Density functional theory calculation predicts a novel ordered boron phosphorus codoped graphene realizing a widely tunable Dirac-cone gap.


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