Organic electroluminescent device
An electroluminescent device, an organic technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems of reduced efficiency of phosphorescent OLEDs, and achieve the effect of improving performance and device life
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Embodiment 1
[0337] First, a glass substrate with an 80 nm thick indium tin oxide (ITO) anode was cleaned and then treated with oxygen plasma and UV ozone. After processing, the substrates were dried in a glove box to remove moisture. The substrate is then mounted on a substrate holder and loaded into a vacuum chamber. The organic layer specified below, at a vacuum of about 10 -8 In the case of Torr, the evaporation is carried out sequentially on the ITO anode by thermal vacuum evaporation at a rate of 0.2-2 angstroms / second. Compound HI was used as a hole injection layer (HIL). The compound HT is used as a hole transport layer (HTL). Compound X-4 was used as an electron blocking layer (EBL). Then the compound GD2-2 was doped in the first host 2-1 and the second host X-4, and co-evaporated as the light emitting layer (8:46:46, EML). H2 was used as the hole blocking layer (HBL). On the hole blocking layer, the compound ET and 8-hydroxyquinoline-lithium (Liq) were co-evaporated as an e...
Embodiment 2
[0343] Example 2 was prepared the same as Example 1 except that compound GD2-12 was used instead of compound GD2-2 in the light emitting layer (EML).
Embodiment 3
[0347] Example 3 was prepared the same as Example 1 except that compound GD2-43 was used instead of compound GD2-2 in the light emitting layer (EML).
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