Phosphorescent compound and organic light emitting diode device using same
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A compound and phosphorescence technology, applied in luminescent materials, organic chemistry, electric solid devices, etc., can solve the problems of complex manufacturing process, low process efficiency, and lack of solubility, and achieve excellent color purity and brightness, and prolong durability.
Active Publication Date: 2019-04-26
ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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However, these compounds do not have ideal solubility in solvents and thus cannot be used to form the light-emitting layer by solution process.
The light-emitting layer should be formed by a deposition process, so the manufacturing process is extremely complicated and the process efficiency is extremely low
In addition, the waste in the deposition process is very high, resulting in increased production costs
Method used
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no. 1 approach
[0087] The ITO glass substrate was patterned to have a light emitting area of 3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.
[0088] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with
[0089] with The sequence forms layers of organic matter.
[0090] At 0.9mA, the brightness is equal to 1224cd / m 2 (5.9V). At this time, CIEx=0.659, y=0.331.
no. 2 approach
[0092] The ITO glass substrate was patterned to have a light emitting area of 3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.
[0093] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with
[0094] with The sequence forms layers of organic matter.
[0095]At 0.9mA, the brightness is equal to 1142cd / m 2 (6.1V). At this time, CIEx=0.660, y=0.330.
no. 3 approach
[0097] The ITO glass substrate was patterned to have a light emitting area of 3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.
[0098] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with
[0099] with The sequence forms layers of organic matter.
[0100] At 0.9mA, the brightness is equal to 1203cd / m 2 (6.0V). At this time, CIEx=0.658, y=0.330.
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Abstract
The invention relates to a phosphorescent compound and an organic light emitting diode device using the same, in particular to a soluble phosphorescent host compound with excellent color purity, highluminance and luminous efficiency and an OLED device using the same. The phosphorescent compound is characterized in that the structural formula is shown as formula I (please see the specification forthe formula), and in the structural formula I, Z is independently selected from the following structures (please see the specification for the formulas), wherein Ar is independently selected from C6-C30 aryl groups and C2-C30 heteroaryl groups, the C6-C30 aryl groups are selected from one of a phenyl group, a naphthyl group, a biphenyl group, a terphenyl group and a phenanthryl group, and the C2-C30 heteroaryl groups are selected from one of a pyridyl group, a bipyridyl group, a quinolyl group, an isoquinolyl group, a phenanthroline group and a triazinyl group. The phosphorescent compound adopts the chemical formula I as a luminous layer of the organic light emitting diode device, and has the excellent color purity and luminance as well as an extended durability effect.
Description
technical field [0001] The present invention relates to a phosphorescent compound and an organic light emitting diode device using the compound, more particularly, to a soluble phosphorescent host compound having excellent color purity and high brightness and luminous efficiency and an OLED device using the compound . Background technique [0002] Recently, demand for flat panel displays such as liquid crystal displays and plasma display panels is increasing. However, these flat panel displays have slower response times and narrower viewing angles than cathode ray tubes (CRTs). [0003] Organic Light Emitting Diode (OLED) devices are one of the next-generation flat panel displays that can solve the above problems and occupy a smaller footprint. [0004] Components of OLED devices can be formed on flexible substrates, such as plastic substrates. In addition, OLED devices have advantages in viewing angle, driving voltage, power consumption and color purity. On the other ha...
Claims
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