研究目的
Investigating the relationship between vacuum annealing of PFO-DBT5 films and the performance of white-light organic light-emitting devices.
研究成果
Vacuum annealing temperature significantly affects the performance of white-light OLEDs with PFO-DBT5 as the light-emitting layer. The optimal annealing temperature was found to be 100 oC, balancing white-light emission quality and device efficiency.
研究不足
The study was limited to the effects of vacuum annealing on PFO-DBT5 films and their performance in white-light OLEDs, without exploring other annealing methods or materials.
1：Experimental Design and Method Selection:
The study involved fabricating white-light OLEDs with PFO-DBT5 as the light-emitting layer and vacuum annealing the films at four different temperatures. The relationship between annealing and device performance was studied using AFM and electroluminescence properties characterization.
2：Sample Selection and Data Sources:
PFO-DBT5 films were prepared by spin-coating using toluene as solvent and annealed at 80, 100, 120, and 140 oC.
3：List of Experimental Equipment and Materials:
SPA-300HV atomic force microscope (AFM), Bruker D8 discover analytical X-ray system, PR-655 spectrometer, Keithley 2400 sourcemeter.
4：Experimental Procedures and Operational Workflow:
Films were observed by AFM, XRD spectra were measured, and OLEDs were fabricated with specific configurations. Electroluminescence performances were characterized.
5：Data Analysis Methods:
The study analyzed the degree of stacking order and inter-chain distance's influence on device performance, using Bragg diffraction formula for calculations.
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