研究目的
Investigating the temperature, laser power, and pressure dependent Raman spectral analysis of C60 oxide (C60O) thin films to evaluate its thermal conductivity and understand the interplay between thermal and mechanical transformations in the C60O cluster.
研究成果
The study demonstrates that C60O has a thermal conductivity marginally higher than that of bulk C60. Temperature and pressure influence the structural and optical properties of C60O, modulating its thermal conductivity. The findings suggest that C60O may find applications in thermoelectric devices due to its low thermal conductivity.
研究不足
The study is limited to the analysis of C60O thin films prepared by the photolysis method. The thermal conductivity evaluation is based on Raman frequency shifts, which may not capture all aspects of heat conduction. The pressure dependent study is limited to 5.5 GPa.
1：Experimental Design and Method Selection:
The study involves temperature, laser power, and pressure dependent Raman spectral analysis of C60O thin films prepared by the photolysis method. The first order temperature, laser power, and pressure coefficients of the Raman frequencies are evaluated.
2：Sample Selection and Data Sources:
C60O thin films were prepared by oxidizing pristine C60 using photo-oxidation techniques. The oxidation was confirmed by room temperature Raman spectrum.
3：List of Experimental Equipment and Materials:
LABRAM HR-800 spectrometer, THMS-600 stage, Renishaw inVia RM2000 spectrometer, Diacell Lever Maxi diamond anvil cell, and various lasers for excitation.
4：Experimental Procedures and Operational Workflow:
Temperature dependent Raman characterization was performed between 80 K and 300 K. Laser power dependent measurements were performed at room temperature. High pressure Raman measurements were performed up to 5.5 GPa.
5：5 GPa.
Data Analysis Methods:
5. Data Analysis Methods: Raman peaks were fitted with Lorentzian profiles to determine peak positions. The thermal variation of Raman frequencies was fitted to evaluate first order temperature coefficients.
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