ORGANIC ELECTROLUMINESCENCE DEVICE AND DEVICE COMPRISING SAME

WIPO Patent Application WO/2019/206291

A1

The present invention relates to an organic electroluminescence device, comprising a substrate, a first electrode, an organic functional material layer, and a second electrode which are sequentially arranged from bottom to top. The organic functional material layer comprises a hole transport region located above the first electrode; a light-emitting layer located above the hole transport region and comprising a host material and a guest material; and an electron transport region located above the light-emitting layer. The hole transport region comprises a hole injection layer, a hole transport layer, and an electron blocking layer which are sequentially arranged from bottom to top, wherein the hole transport layer and the electron blocking layer comprise first and second organic materials, respectively. The HOMO energy level of the first organic material of the hole transport layer is -5.2 eV to -5.6 eV, and the HOMO energy level of the second organic material thereof is -5.4 eV to -5.7 eV. The HOMO energy level of the first organic material of the electron blocking layer is -5.4 eV to -5.75 eV, and the HOMO energy level of the second organic material thereof is -5.6 eV to -6.0 eV, and |HOMO first organic material|<|HOMO second organic material|.

LI CHONG (CN)
ZHANG ZHAOCHAO (CN)
WANG FANG (CN)
TANG DANDAN (CN)

PCT/CN2019/084628

October 31, 2019

April 26, 2019

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JIANGSU SUNERA TECH CO LTD (CN)

H01L51/54; H01L51/50

WO2012136295A1

2012-10-11

CN104966786A	2015-10-07
CN106531769A	2017-03-22
CN105244451A	2016-01-13
CN105576146A	2016-05-11

PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)

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