Organic material and organic electroluminescent device using the same
OwnerFeng-Wen Yen, Cheng-Hao Changinventors
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Abstract
The present invention discloses an novel organic material is represented by the following formula (A) and organic EL device using the organic material as hole blocking layer (HBL), electron transport layer (ETL) or phosphorescent host can efficiently lower driving voltage, lower power consumption and increase the efficiency. The same definition as described in the present invention.
Claims10
An organic material with a general formula (A) as following:
- Wherein m represents 0 to 2, and when m represents 1 or 2, L represents a single bond, a substituted or unsubstituted arylene group having 6 to 40 ring carbon atoms, or a substituted or unsubstituted heterarylene group having 3 to 40 ring carbon atoms;
- when m represents 0, L represents a substituted or unsubstituted heterarylene group having 3 to 40 ring carbon atoms;
- X represents O, S, NR5;
- at least one of positions from Y1 to Y4 represents nitrogen atom, and rest of the positions from Y1 to Y4 represent nitrogen atom or CR6;
- R5 and R6 independently represents a hydrogen atom, a substituent, or a bond to L;
- p represents an integer of 0 to 7, q represents an integer of 0 to 10;
- R1 to R4 are independently selected from the group consisting of a hydrogen atom, a halide, an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
An organic electroluminescent device comprising a pair of electrodes consisting of a cathode and an anode and between the pairs of electrodes comprising at least a layer of the organic material with a general formula (A), the general formula (A) is shown as the following:
- Wherein m represents 0 to 2, and when m represents 1 or 2, L represents a single bond, a substituted or unsubstituted arylene group having 6 to 40 ring carbon atoms, or a substituted or unsubstituted heterarylene group having 3 to 40 ring carbon atoms;
- when m represents 0, L represents a substituted or unsubstituted heterarylene group having 3 to 40 ring carbon atoms;
- X represents O, S, NR5;
- at least one of positions from Y1 to Y4 represents nitrogen atom, and rest of the positions from Y1 to Y4 represent nitrogen atom or CR6;
- R5 and R6 independently represents a hydrogen atom, a substituent, or a bond to L;
- p represents an integer of 0 to 7, q represents an integer of 0 to 10;
- R1 to R4 are independently selected from the group consisting of a hydrogen atom, a halide, an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms,
- wherein the at least a layer of the organic material includes an electron transport layer selected from a group consisting of Li, Ca, and 8-hydroxyquinolinolato-lithium.
Dependencies are inferred from the claim text.