研究目的
Investigating the fabrication method of transparent conductive films (TCF) using graphene oxide (GO) sheets prepared by Hummer’s method and simple solution spin coating method, and examining the effects of chemically and heat reduced treatments on the electrical and optical properties of reduced GO films.
研究成果
The research demonstrates the fabrication of transparent conductive films using GO sheets prepared by Hummer’s method and simple solution spin coating method. The electrical property of chemically converted graphene (CCG) film is found to be lower than that of heat-treated GO film due to less overlapping of graphene sheets. The transmittance and sheet resistance of the TCF are 56 T% and 50 kohm/sq, respectively.
研究不足
The study is limited to the effects of chemically and heat reduced treatments on the electrical and optical properties of reduced GO films. The potential for optimization in the fabrication process and the exploration of other reduction methods are not fully addressed.
1：Experimental Design and Method Selection:
The study involves the preparation of GO sheets using Hummer’s method, followed by chemical and heat reduction processes. The properties of the resulting materials are investigated through TEM, four-point measurement, and optical measurements.
2：Sample Selection and Data Sources:
Natural graphite powders are used as the main material. The GO suspension is prepared and then subjected to chemical reduction using NaBH4 and heat treatment at 500°C in a N2 protective atmosphere.
3：List of Experimental Equipment and Materials:
Transmission electron microscope (TEM, FEGTEM, Tecnai F20 G2 MAT, FEI), four-point probe station (EverBeing INT’L CORP. 4 Point Probe SR-4), sourcemeter (KEITHLEY 2400 SourceMeter), UV–Vis transmission spectra (Hitachi U-2001 spectrophotometer), and sonicator (Branson 1210).
4：0).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The GO sheets are prepared, chemically and heat reduced, and then characterized for their electrical and optical properties. The effects of GO concentration and spin coating times on the properties of the films are investigated.
5：Data Analysis Methods:
The electrical and optical properties of the films are analyzed to determine the relationship between reduction method and the properties of the graphene related materials.
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