Park, JH Park, OO Yu, JW Kim, JK Kim, YC 2024-01-21T07:15:37Z 2024-01-21T07:15:37Z 2021-09-02 2004-03-08 0003-6951 https://pubs.kist.re.kr/handle/201004/137766 We report the effect of polymer-insulating nanolayers on electron injection in the polymer light-emitting diodes (PLEDs) in which a hole is the major charge carrier. Several different polymer nanolayers with varying dielectric constants were placed between the emitting layer and the aluminum cathode, and their influence on the device performance was investigated. The device with a nanolayer of lower dielectric constant demonstrated higher luminescence quantum efficiency. In particular, when a similar to10-nm-thick polystyrene layer was employed, the device gave approximately two orders of magnitude higher external quantum efficiency than that of the one without an insulating nanolayer. (C) 2004 American Institute of Physics. English AMER INST PHYSICS ELECTROLUMINESCENCE DEVICES EFFICIENCY CATHODE Effect of polymer-insulating nanolayers on electron injection in polymer light-emitting diodes Article 10.1063/1.1667014 1 APPLIED PHYSICS LETTERS, v.84, no.10, pp.1783 - 1785 APPLIED PHYSICS LETTERS 84 10 1783 1785 scie scopus 000189384900055 2-s2.0-1842581405 Physics, Applied Physics Article ELECTROLUMINESCENCE DEVICES EFFICIENCY CATHODE Light Emitting Diodes Electron Injection insulating Nanolayer