研究目的
Investigating the linear and nonlinear optical properties of Sb2Se3 thin films elaborated from nano-crystalline mechanically alloyed powder for potential applications in photovoltaic conversion and nonlinear photonics.
研究成果
Sb2Se3 thin films exhibit promising optical and nonlinear optical properties, making them suitable for photovoltaic and photonic applications. The nanostructure of the material enhances its nonlinear characteristics, suggesting potential uses in optical switching and photonic devices.
研究不足
The study is limited by the low substrate temperature during thin film deposition, which may affect the crystallinity and optical properties of the films. The nonlinear optical characteristics, while promising, require further investigation to fully understand their potential applications.
1：Experimental Design and Method Selection:
The study involved the synthesis of Sb2Se3 powder via mechanical milling of Sb and Se elements, followed by thermal deposition to obtain thin films. Structural, magnetic, and optical characterizations were performed using XRD, Raman spectroscopy, XPS, SEM, VSM, and UV–Vis–NIR spectrophotometry.
2：Sample Selection and Data Sources:
Stoichiometric molar ratio Sb:Se of 2:3 was used for mechanical milling. Thin films were grown on non-heated glass substrates under vacuum.
3：List of Experimental Equipment and Materials:
Planetary ball mill model Fritsch pulverisette P-6, PANalytical X’Pert Pro Diffractometer, Jobin–Yvon T64000 spectrometer, Cary 5000 UV–Vis–NIR spectrophotometer.
4：Experimental Procedures and Operational Workflow:
Mechanical milling was performed at 300 rpm for 1 h under argon atmosphere. Thin films were deposited under a vacuum of 10?6 Torr using a tungsten boat.
5：Data Analysis Methods:
XRD patterns were fitted using the Maud program based on the Rietveld method. Optical parameters were derived using Swanepoel’s method, Cauchy dispersion equation, and Wemple–DiDomenico single-effective oscillator model.
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