研究目的
Investigating the effect of blending conjugated polymer additive P3HT with small-molecule organic semiconductor TIPS pentacene on tuning the crystallization, microstructure, and charge transport properties.
研究成果
Blending P3HT with TIPS pentacene effectively tunes the film morphology and improves charge transport and device performance. The approach offers a novel pathway to enhance the performance of solution-processed organic semiconductors.
研究不足
The study focuses on TIPS pentacene as a model semiconductor, and the findings may not be directly applicable to all small-molecule organic semiconductors. The effect of P3HT on other semiconductors would require further investigation.
1：Experimental Design and Method Selection
The study involved blending TIPS pentacene with different amounts of P3HT to investigate the effect on film morphology and charge transport. The methodology included drop casting the mixture onto a substrate and characterizing the film morphology and transistor performance.
2：Sample Selection and Data Sources
TIPS pentacene and P3HT were used as the semiconductor and polymer additive, respectively. The samples were prepared with varying weight ratios of P3HT to TIPS pentacene.
3：List of Experimental Equipment and Materials
Thermal evaporator (Angstrom Engineering), Keithley 4200 semiconductor parameter analyzer, polarized optical microscope.
4：Experimental Procedures and Operational Workflow
The TIPS pentacene/P3HT mixture was drop casted onto a silicon substrate, and the crystals were grown in a solvent-rich environment. Transistors were fabricated in a bottom-gate, top-contact configuration, and their electrical characteristics were measured.
5：Data Analysis Methods
Field-effect mobilities were extracted from the transfer curves of the transistors. Crystal misorientation angle and grain width were measured to assess film morphology.
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