Zn3(As1-xPx)2纳米结构制备及光谱特性研究

doi:10.3964/j.issn.1000-0593(2024)07-1934-06

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Abstract Zn₃As₂ and Zn₃P₂ have the same pseudo-cubic lattice structure and present a wide range of application prospects in the field of optoelectronic devices because of their high electron mobility, narrow direct band gaps, and good air stability. At present, there is relatively little research on the nanostructure of Zn₃As₂-Zn₃P₂ solid solution, and Zn₃(As_1-xP_x)₂ (x=0, 0.05, 0.1) master alloys were obtained by high-pressure sintering technology, and then a variety of Zn₃(As_1-xP_x)₂ nanostructures are synthesized by chemical vapor deposition, including macro-sized nanoribbons (Length 3~10 mm; Width 1~4 mm; Thickness ~20 μm), nano sails, nanorods and nano silver hairpins. The effect of P doping on phase composition, element content, microstructure, and spectral characteristics was systematically investigated. XRD results showed that the main phase of Zn₃(As_1-xP_x)₂ macroscopic nanoribbon samples was α′ phase. With the increase of P doping contents, the (224) diffraction peak shifted to the right, indicating a decrease in the lattice constant. Electron spectroscopy analysis showed that the actual content of P in these nanoribbons corresponding to x=0.05 and x=0.1 Zn₃(As_1-xP_x)₂ master alloys was x=0.026 and x=0.062, respectively. The microstructure analysis showed that the growth mode of Zn₃As₂ macroscopic nanoribbons was along the 〈221〉 crystal face rhombus-shaped layer-like growth and that P doping led to a reduction in the macroscopic size of the nanoribbons, accompanied by growth mode change from rhombus-shaped layered growth to nanoparticle stacked layered growth. Raman spectra of the nanoribbon samples showed characteristic peaks at 79, 97, 198, 320, 428 and 1 107 cm^-1. P doping led to a blue shift of 1 107 cm^-1 characteristic peaks in Raman spectra, and 1 101 and 1 599 cm^-1 characteristic peaks in Fourier infrared spectroscopy (FTIR), and 300, 422, and 635 nm characteristic peaks in PL spectra were also blue-shifted. The linear relationship between photocurrent and voltage of Zn₃As₂ and Zn₃(As_0.974P_0.026)₂ nanoribbons indicate good ohmic characteristics, and the photoresponse of Zn₃(As_0.974P_0.026)₂ nanoribbons after P doping shows the highest sensitivity under 900 nm conditions.

Key words：Zn₃(As_1-xP_x)₂;Zn₃As₂; Nanoribbon; Solid solution

Received: 2023-03-31 Accepted: 2023-09-21

ZTFLH:

O657.37

Corresponding Authors: SUN Nai-kun, TIAN Hui E-mail: naikunsun@163.com；tianhui18@mails.jlu.edu.cn

Cite this article:

WANG Hao,SUN Nai-kun,PANG Chao, et al. Preparation and Spectroscopic Properties of Zn₃(As_1-xP_x)₂ Nanostructures[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(07): 1934-1939.

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https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2024)07-1934-06 OR https://www.gpxygpfx.com/EN/Y2024/V44/I07/1934

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