Thin-film electroluminescent device

摘要

The thin-film electroluminescent device of the present invention comprises a thin film of a polyoxadiazole derivative represented by the formula: wherein each of X0 and Y0 independently represents a divalent organic group which may comprise a silicon atom, and n is an integer of 2 or greater, formed as an electroluminescent layer or a charge injecting/transporting layer between electrodes, at least one thereof being transparent. This thin-film electroluminescent device is excellent not only in electroluminescence and capability of charge injection/transport to thereby ensure high light emission efficiency but also in durability such as heat resistance.