研究目的
Investigating the fabrication of highly efficient inkjet-printed blue OLEDs by introducing 3,5-bis(N-car-bazolyl)benzene (mCP) as the host material into organic light emitting layers.
研究成果
The study successfully demonstrated the fabrication of highly efficient inkjet-printed blue OLEDs with improved charge transport and film uniformity. The optimal device showed a maximum luminance of 3743 cd/m2 and an external quantum efficiency of 5.03%. A 3-inch blue OLED array device was also fabricated with a brightness uniformity of 92.7%, indicating promising potential for large-area and high-efficient OLEDs.
研究不足
The study focuses on blue OLEDs and may not be directly applicable to other colors. The scalability of the inkjet-printing process for larger displays needs further investigation.
1：Experimental Design and Method Selection:
The study involved the fabrication of blue OLEDs using inkjet-printing technology with mCP and PFSO as the emissive layer materials. The weight ratio of mCP to PFSO was carefully tailored to optimize device performance.
2：Sample Selection and Data Sources:
Commercially available chemicals and solvents were used without further purification. The pixelated substrates were obtained with photoetching.
3：List of Experimental Equipment and Materials:
A Microfab JetLab II printer was used for inkjet printing. The materials included PEDOT:PSS, mCP, PFSO, and BmPyPb.
4：Experimental Procedures and Operational Workflow:
The emissive film was performed by inkjet printing. Finally, BmPyPb, LiF, and Al cathodes were deposited successively on the emissive layer.
5：Data Analysis Methods:
The performance of the devices was evaluated based on luminance and external quantum efficiency measurements.
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