摘要： Top-emitting microcavity polymer light-emitting diodes (TMPLEDs) are of great significance for active matrix PLED displays with high color purity. However, the complex device structures of high efficiency microcavity organic light-emitting diodes fabricated by the full vapor deposition technology are not suitable to the solution processed PLEDs. The solution-processed TMPLEDs with simple device structures are promising candidates as the large-area, mass production display techniques. In this work, three strategies were used to apply microcavity into PLEDs: (1) double Ag electrodes performed as the mirrors of cavity, instead of multi-layer Bragg reflector, which simplified the device structure and fabrication process; (2) three solution processed functional layers were specially designed for avoiding the inter-infiltration between the different solution and improve the interface contacts; (3) high order microcavities were utilized according to the optical simulation results, in which thick EMLs benefited to thickness control and reproductivity. As results, the full-color emission including pure red, green, blue was realized, and quasi-white light was also achieved from single polymer emitting material. The achievement of color purity always sacrifices part of current efficiency (CE) due to the spectra narrowing, while the higher CE of green TMPLED (10.08 cd/A) than that of non-cavity PLED (∽8.60 cd/A) cast lights on the future improvement.