Organic el belongs to a electric injection luminescence, and electrode materials should play very important role in carrier injection of el devices, which was, however, neglected sometimes.
由于有机el属于电注入发光，因而电极材料在EL器件的载流子注入中起着重要作用，但这往往被人们所忽略。
The physical processes of electro-luminescence include injection, migration of carriers, creation of exciton and emission of photons.
有机电致发光包括载流子的注入、载流子的迁移、激子的产生、光子的发射等过程。
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