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而电子传输层的作用就是帮助阴极释放的电子能够顺利地传输至有机材料中。OEL 的正极是一个薄而透明的铟锡氧化物,与阴极不同,通电后阳极释放的是带正电的电洞(失去电子而留有空穴的原子)。电洞传输层的作用就是帮助带正电的电洞移动至有机层。接通电流,当电子传输层带来的电子与电洞传输层的电洞在有机材料中相遇后,正极的电洞与阴极的电子就会在发光层中结合,产生光亮。根据包夹的有机材料的不同,会发出不同颜色的光。
The role of the electron transport layer is to help the cathode release of electrons can be successfully transmitted to the organic material. The positive electrode of the OEL is a thin, transparent indium tin oxide. Unlike the cathode, the positively charged holes (atoms that lose electrons and leave holes) are released by the anode. The role of the hole transport layer is to help move the positively charged holes to the organic layer. When the electrons in the electron transport layer and the holes in the hole transport layer meet in the organic material, the holes in the positive electrode and the electrons in the cathode are combined in the light-emitting layer to generate light. According to the different materials of organic materials, different colors of light will be emitted.