20000-48-0Relevant academic research and scientific papers
Small-molecular OLED electron transport material and preparation method and application thereof
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, (2020/06/17)
The invention belongs to the technical field of organic electron transport materials, and relates to a small-molecular OLED electron transport material and a preparation method and an application thereof. Compounds of the small-molecular OLED electron transport material comprise an aromatic fused heterocycle and an aryl-substituted benzimidazole group which are connected with each other. The two kinds of groups not only enable the compounds to have good electron accepting capability, but also tend to planarity to be beneficial to molecular stacking, and are beneficial to combination of holes and electrons and exciton generation, so that the electron mobility of the material is improved, and the device efficiency is improved; meanwhile, the combination of the two enables carrier transmission to be balanced; when the small-molecular OLED electron transport material is applied to an organic light-emitting device and used as an electron transport layer, the device shows the advantages of low driving voltage and high light-emitting efficiency, and is superior to an existing common OLED device.
