Journal
PHYSICA B-CONDENSED MATTER
Volume 620, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physb.2021.413276
Keywords
Silicon carbide nanotubes; Group-III doped; Inter-wall coupling; First-principles theory
Categories
Funding
- National Natural Science Foundation of China [11574261, 11774027]
- Natural Science Foundation of Hebei Province, China [A2021203030]
Ask authors/readers for more resources
The study found that there are differences in the inter-wall coupling mechanism when doping III group elements on the inner and outer walls of DWSiCNTs, with inner wall doping enhancing the coupling effect, increasing carrier concentration and prolonging carrier lifetime.
The inter-wall coupling mechanism is studied by comparing the group-III doped on the inner and outer walls of DWSiCNTs and SWSiCNTs differs in band structure and optical properties. For DWSiCNTs, B and Ga atoms doping the outer wall is easier to dope, while Al and In doping the inner wall is easier to achieve. DWSiCNTs doped with group-III atoms enhances the inter-wall coupling, and the coupling effect of the inner wall doped DWSiCNTs is stronger than that of the outer wall doped. The inner wall doping has a more obvious regulatory effect on the inter-wall coupling of DWSiCNTs. The absorption and photoconductivity show that in the visible and ultraviolet bands, the intrinsic conductivity peaks of DWSiCNTs are larger and wider. This is because the coupling effect increases the electron transition probability of doped DWSiCNTs, making the carrier concentration greater than SWSiCNTs, and the minority carrier lifetime is longer.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available