| 초록 |
Colloidal semiconductors, called quantum dots (QDs), have been attracted attention in display technology due to the superior performance than other luminescent competitors in the color purity, quantum efficiency, and stability. For construction of QD-based light emitting diodes (QLED), the underlying hole-transporting layer (HTL) must preserve its uniform properties during the solution processing for the deposition of QDs which can damage the pre-formed layer. To solve this problem, we adopted fluorous solvents due to their unique characteristics that do not interact with the HTL composed of non-fluorinated materials. Thus, QDs are required to modify the surface with the semi-perfluorinated ligands (RF) to be soluble in fluorous solvents, and the fluorinated QD (RF-QD) enabled the solution-casting on top of 4,4’,4’’-tris(N- carbazolyl)-triphenylamine, TCTA layer (HTL). A RF-QD was then evaluated for the construction and operation of LEDs on top of the TCTA. |
