Organic LED, has stack of thin organic layers including light emitting layer between electron transport layer and hole transport layer, and cathode including silver layer and aluminum layer deposited on silver layer

摘要

The organic LED has a glass substrate (1) made of mineral glass or plastic. A light diffusion layer (2) i.e. enamel layer, is provided between the transparent substrate and a transparent anode (3). A stack of thin organic layers (4) includes a light emitting layer (4b) between an electron transport layer (4c) and a hole transport layer (4a). A cathode (5) includes a silver layer (5a), and an aluminum layer (5b) deposited on the silver layer. The metal layer has a thickness ranging between 10 Nm and 60 Nm, preferably 20 and 40 Nm, preferably 30 and 35 Nm.