Effect of Nitrogen Passivation on Optical Properties of Te-doped GaSb

Tian-yu, 容天宇 Rong; Dan, 房丹 Fang; Li-bin, 谷李彬 Gu; Xuan, 方铉 Fang; Dengkui, 王登魁 Wang; Jilong, 唐吉龙 Tang; Xinwei, 王新伟 Wang; Xiaohua, 王晓华 Wang

doi:10.3788/gzxb20184703.0316001

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“…In fact, in order to broaden applications of GaSb, many efforts have been devoted to the optical properties of GaSb with different dopants. 9,10,[14][15][16][17][18] Obviously, it is very significant to simultaneously realize FM and optical performances in GaSb. Recently, Wang et al found that the synergistic function between the pinning effect and the exchange coupling leads to improved magnetic properties in Zr substituted Ce-Fe-B alloys, 19) Murtaza et al prepared ZnO:Zr samples by formal solid-state reaction technique and found that samples exhibit room-temperature ferromagnetism.…”

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confidence: 99%

The magnetic and optical properties of Zr doped GaSb: the first-principles calculation study

Pan¹,

Lin²,

Wang³

2021

Jpn. J. Appl. Phys.

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The magnetic and optical properties of Zr doped GaSb were studied by the first-principles calculation. The results indicated that both ZrGa and ZrSb substitutions can introduce 1 μ B total magnetic moments, but the formation energy of ZrSb is larger. The magnetic couplings between two ZrGa substitutions are ferromagnetic (FM) with long range. Zr can enhance the absorption of photons in the visible and infrared (IR) regions, improve the static dielectric constant and photocatalytic performance. Although moments induced by ZrGa are not affected by strains, the parts contributed by Zr-4d increased/decreased with enlarging tensile/compressive strains. The FM interaction strength is enhanced with magnifying compressive strains and weakened with increasing tensile strains for our considered structures. Moreover, strains make optical curves of Zr doped GaSb move to low energy region slightly. These results indicate that strains may be an effective routine to enhance FM interaction strength and photocatalytic performance of the GaSb:Zr system.

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