Imidazopyridine-based compound and organic light emitting diode including organic layer comprising the imidazopyridine-based compound
A technology of imidazopyridine and light-emitting diodes, applied in the field of organic light-emitting diodes, can solve the problems of not having driving voltage, brightness current density, power efficiency, lifespan, etc., and achieve the effect of high electron transmission capacity
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Embodiment 1
[0148] 15Ω / cm 2 (1200 Ȧ) ITO glass substrates were cut into a size of 50 mm×50 mm×0.7 mm, ultrasonically cleaned with isopropanol for 5 minutes and pure water for 5 minutes. The substrate was then rinsed with UV ozone for 30 minutes. m-MTDATA was vacuum deposited onto the substrate to form a hole injection layer with a thickness of 750 Ȧ. α-NPD was then vacuum-deposited on the hole injection layer to form a hole transport layer with a thickness of 150 Ȧ. A light emitting layer with a thickness of 300 Ȧ was formed on the hole transport layer using 97 wt % of DSA as a host and 3 wt % of TBPe as a dopant. Compound 1 prepared in Synthesis Example 1 was vacuum-deposited on the light emitting layer to form an electron transport layer with a thickness of 200 Ȧ. LiF was vacuum-deposited on the electron transport layer to form an electron injection layer with a thickness of 80 Ȧ, and then Al was vacuum-deposited on the electron injection layer to form a cathode with a thickness of 3...
Embodiment 2
[0150] An organic light-emitting diode was prepared in the same manner as in Example 1, except that Compound 4 prepared in Synthesis Example 2 was used as the electron transport layer material.
Embodiment 3
[0152] An organic light-emitting diode was prepared in the same manner as in Example 1, except that Compound 7 prepared in Synthesis Example 3 was used as the electron transport layer material.
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