P‐115: Effect of Solvents and Pressure on the Performance of Quantum Dot light Emitting Diodes Fabricated with Soft‐Contact Transfer Printing

The Quantum‐dot light emitting diode (QLED) have been actively investigated in display industry for the advanced factor such as cost, color purity and stability. To utilize the quantum‐dot (QD) for emission layer of the light emitting diodes (LEDs), novel high resolution patterning techniques are also studied. Among the various patterning techniques, the transfer printing technique that form the pixel via elastomer stamp can realize display that has extremely high resolution and it is clarified by many precede investigations. In this work, we analyzed the QD film morphology coated with various solvents and studied the effect of the transfer pressure on the QLED performance. The formation of uniform quantum dot layer on a donor substrate and controlling the pressure during the QD transfer printing process are important for increasing the performance of QLED fabricated by transfer printing.