Electronic and photochemical properties of hybrid binary silicon and germanium derived Janus monolayers

Author(s):  
Xiuyuan Li ◽  
Kaining Zhang ◽  
Xin Zeng ◽  
Nan Li ◽  
Jichang Wang

Electronic structures and optical properties of a novel class of hybrid binary Janus materials derived from IV-V groups were investigated through the first principles calculations. The computational results predicted that,...

2018 ◽  
Vol 6 (11) ◽  
pp. 2830-2839 ◽  
Author(s):  
Gul Rehman ◽  
S. A. Khan ◽  
B. Amin ◽  
Iftikhar Ahmad ◽  
Li-Yong Gan ◽  
...  

Based on (hybrid) first-principles calculations, material properties (structural, electronic, vibrational, optical, and photocatalytic) of van der Waals heterostructures and their corresponding monolayers (transition metal dichalcogenides and MXenes) are investigated.


2016 ◽  
Vol 4 (23) ◽  
pp. 5214-5221 ◽  
Author(s):  
Lixin Ning ◽  
Xiaowen Ji ◽  
Yuanyuan Dong ◽  
Wei Jin ◽  
Yucheng Huang ◽  
...  

Effects of Si–N incorporation on electronic structures and optical properties of YAG:Ce were investigated by first-principles calculations.


2018 ◽  
Vol 32 (07) ◽  
pp. 1850092 ◽  
Author(s):  
Dandan Li ◽  
Juan Du ◽  
Qian Zhang ◽  
Congxin Xia ◽  
Shuyi Wei

Through first-principles calculations we study the electronic structures and optical properties of two-dimensional (2D) Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys. The results indicate that the band gap value of Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys is decreased continuously when Ti(Zr) concentration is increased, which is very beneficial to optoelectronic devices applications. Moreover, the static dielectric constant is increased when the Ti(Zr) concentration is increased in the 2D Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys. In addition, we also calculate the imaginary part [Formula: see text] dispersion of Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys along the plane with different Ti(Zr) concentrations. The threshold energy values decrease with increasing Ti(Zr) concentrations in the Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 ternary alloys. Moreover, the calculations of formation energy also indicate that these 2D alloys can be fabricated under some experimental conditions. These results suggest that Ti(Zr) substituting Sn atom is an efficient way to tune the band gap and optical properties of 2D SnS2 nanosheets.


2018 ◽  
Vol 13 (4) ◽  
pp. 540-545
Author(s):  
Zhenyuan Jia ◽  
Peida Wang ◽  
Yuhan Zhong ◽  
Jiahui Hou ◽  
Chunmei Li ◽  
...  

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