| 摘要 |
<p>Disclosed are an organic electroluminescent element and a manufacturing method thereof. A low-voltage, high-efficiency top emission or transparent organic electroluminescent (EL) element is provided. The organic EL element comprises an anode, an organic EL layer, and a cathode deposited successively on a support substrate. The organic EL layer is provided with at least a positive hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer in order from the anode side. The positive hole transport layer, the light emitting layer, and the electron transport layer are composed of organic materials. The cathode is composed of a transparent conductive oxide material. The electron injection layer is composed of an n-type chalcogenide semiconductor having an optical band gap of at least 2.1 eV. In addition, the manufacturing method of the organic EL element involves forming the electron injection layer which is composed of the n-type chalcogenide semiconductor by a physical vapor deposition method which does not use plasma discharge.</p> |
