研究目的
Investigating the structural fundamentals of NaT3 in OFETs with and without embedded silver nanoparticles to understand the influence of nanoparticles on the device performance.
研究成果
The NaT3 thin film unit cell in OFETs differs significantly from the bulk, with reduced long-range order. Embedding silver nanoparticles does not significantly alter the unit cell or crystal sizes, nor does it notably affect the field-effect mobility. These findings provide a structural basis for designing OFETs with aryl end-capped oligothiophenes.
研究不足
The study is limited by the small area coverage of nanoparticles (3%) and the difficulty in probing micrometer-scaled areas of interest with X-ray scattering. The impact of nanoparticles on device performance may be underestimated due to their low coverage.
1：Experimental Design and Method Selection:
The study employs regular- and microbeam grazing incidence wide- and small-angle X-ray scattering (GIWAXS/GISAXS) to characterize the device structure locally.
2：Sample Selection and Data Sources:
OFETs with and without embedded silver nanoparticles were fabricated on highly n-doped Si substrates with a SiO2 gate dielectric.
3：List of Experimental Equipment and Materials:
Equipment includes X-ray scattering setups at ESRF and PETRA III, AFM for film thickness determination, and a custom-built electric characterization setup. Materials include NaT3, Ag nanoparticles, Au electrodes, and PMMA for lithography.
4：Experimental Procedures and Operational Workflow:
Fabrication of OFETs by E-beam lithography, deposition of NaT3 by vacuum sublimation, and characterization by GIWAXS/GISAXS and electric measurements.
5：Data Analysis Methods:
Reciprocal space mapping for GIWAXS images, Scherrer grain-size analysis for crystal sizes, and DFT for molecular packing analysis.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
