First principles calculation of lithium-phosphorus co-doped diamond

• Дата: 2013
• Автори: Shao, Q.Y., Wang, G.W., Zhang, J., Zhu, K.G.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики конденсованих систем НАН України 2013
• Назва видання: Condensed Matter Physics
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/121066
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: First principles calculation of lithium-phosphorus co-doped diamond / Q.Y. Shao, G.W. Wang, J. Zhang, K.G. Zhu // Condensed Matter Physics. — 2013. — Т. 16, № 1. — С. 13702:1–14. — Бібліогр.: 22 назв. — англ.

We calculate the density of states (DOS) and the Mulliken population of the diamond and the co-doped diamonds with different concentrations of lithium (Li) and phosphorus (P) by the method of the density functional theory, and analyze the bonding situations of the Li-P co-doped diamond thin films and the impacts of the Li-P co-doping on the diamond conductivities. The results show that the Li-P atoms can promote the split of the diamond energy band near the Fermi level, and improve the electron conductivities of the Li-P co-doped diamond thin films, or even make the Li-P co-doped diamond from semiconductor to conductor. The affection of Li-P co-doping concentration on the orbital charge distributions, bond lengths and bond populations is analyzed. The Li atom may promote the split of the energy band near the Fermi level and also may favorably regulate the diamond lattice distortion and expansion caused by the P atom.