研究目的
Investigating the influence of different solvents on the surface morphology of P3HT thin films using photoemission electron microscopy.
研究成果
The solubility of P3HT in the respective solvent is identified as the primary parameter determining the domain size, with the boiling point playing a secondary role. The ability to investigate surface morphology with PEEM is a valuable tool for understanding the structure-function relationship in semiconducting polymer films.
研究不足
The study is highly surface sensitive, which may not fully represent the bulk structure of the films. Additionally, the correlation between film morphology and device performance is not directly addressed.
1：Experimental Design and Method Selection:
The study employs photoemission electron microscopy (PEEM) to investigate the surface morphology of P3HT thin films spun cast from different solvents at room and elevated temperatures.
2：Sample Selection and Data Sources:
P3HT films were prepared using chlorobenzene (CB), 1,2-dichlorobenzene (DCB), 1,2,4-trichlorobenzene (TCB), thiophene (TP), and chloroform (CF) as solvents.
3：List of Experimental Equipment and Materials:
PEEM was used for imaging, with a polarized laser source for chain orientation analysis.
4：Experimental Procedures and Operational Workflow:
Films were spun cast at room temperature and at elevated temperatures, followed by PEEM imaging to analyze chain orientation and domain size.
5：Data Analysis Methods:
The orientation persistence length (OPL) method was used to quantify domain sizes and degrees of order.
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