Organic light emitting element, display device, image information processing device, lighting device, image forming device, exposure device, and organic photoelectric conversion element

Abstract

The present disclosure provides an organic light emitting element which has a pair of electrodes and an organic compound layer disposed therebetween and in which the organic compound layer contains an organic compound represented by the following general formula [1], wherein in the formula [1], Ar 1 and Ar 2 each independently represent an aromatic hydrocarbon group or a heteroaromatic ring group, R 1 to R 4 are each independently selected from a hydrogen atom or a substituent, R 1 and R 2 and R 3 and R 4 each may form a benzene ring, wherein the benzene ring may have at least one substituent.

What is claimed is: 
     
         1 . An organic electronic element comprising: a pair of electrodes; and an organic compound layer disposed between the pair of electrodes,
 wherein the organic compound layer contains an organic compound represented by the following general formula [1]   
       
         
           
           
               
               
           
         
         in the formula [1], Ar 1  and Ar 2  are each independently selected from an aromatic hydrocarbon group having 6 to 24 carbon atoms or a heteroaromatic ring group having 3 to 23 carbon atoms, 
         Ar 1  and Ar 2  each may have a substituent selected from the group consisting of a halogen atom, a cyano group, an alkyl group having 1 to 4 carbon atoms, a phenyl group, a tolyl group, a xylyl group, a mesityl group, and a cumenyl group, 
         R 1  to R 4  are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, 
         R 1  and R 2  and R 3  and R 4  each may form a benzene ring, the benzene ring may have as a substituent, at least one of a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, and 
         X 1  and X 2  represent a sulfur atom or an oxygen atom, and X 1  and X 2  represent the same atom. 
       
     
     
         2 . An organic light emitting element comprising: an anode; a cathode; and a light emitting layer disposed between the anode and the cathode,
 wherein the organic light emitting element has an organic compound layer between the cathode and the light emitting layer, and the organic compound layer contains an organic compound represented by the following general formula [1]   
       
         
           
           
               
               
           
         
         in the formula [1], Ar 1  and Ar 2  are each independently selected from an aromatic hydrocarbon group having 6 to 24 carbon atoms or a heteroaromatic ring group having 3 to 23 carbon atoms, 
         Ar 1  and Ar 2  each may have a substituent selected from the group consisting of a halogen atom, a cyano group, an alkyl group having 1 to 4 carbon atoms, a phenyl group, a tolyl group, a xylyl group, a mesityl group, and a cumenyl group, 
         R 1  to R 4  are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, 
         R 1  and R 2  and R 3  and R 4  each may form a benzene ring, the benzene ring may have as a substituent, at least one of a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, and 
         X 1  and X 2  represent a sulfur atom or an oxygen atom, and X 1  and X 2  represent the same atom. 
       
     
     
         3 . The organic light emitting element according to  claim 2 , wherein the Ar 1  and Ar 2  each have at least one fluorine atom as a substituent. 
     
     
         4 . The organic light emitting element according to  claim 2 , wherein the Ar 1  and Ar 2  each have at least one tert-butyl group as a substituent. 
     
     
         5 . The organic light emitting element according to  claim 2 , wherein the organic compound layer further contains a compound different from the organic compound represented by the general formula [1]. 
     
     
         6 . The organic light emitting element according to  claim 5 , wherein the weight rate of the compound different from the organic compound represented by the general formula [1] is more than 0 to 80 percent by weight when the total of the organic compound represented by the general formula [1] and the compound different therefrom is assumed to be 100 percent by weight. 
     
     
         7 . The organic light emitting element according to  claim 2 , wherein the organic compound layer is in contact with the cathode. 
     
     
         8 . The organic light emitting element according to  claim 2 , wherein the organic light emitting element has a plurality of light emitting layers including the above light emitting layer,
 at least one of the plurality of light emitting layers is a light emitting layer emitting color light different from that of the rest of the plurality of light emitting layers, and   the organic light emitting element emits white light.   
     
     
         9 . A display device comprising: a plurality of pixels, wherein the pixels each have the organic light emitting element according to  claim 2  and an active element connected thereto. 
     
     
         10 . The display device according to  claim 9 , wherein the active element is a transistor, and the transistor has an oxide semiconductor in an active region. 
     
     
         11 . A lighting device comprising: the organic light emitting element according to  claim 2 ; and a switching element connected thereto. 
     
     
         12 . A lighting device comprising: a substrate; a heat dissipation portion; and the organic light emitting element according to  claim 2 ,
 wherein the heat dissipation portion is a heat dissipation portion dissipating heat in the device to the outside thereof.   
     
     
         13 . An image forming device comprising: a photoreceptor; an exposure portion exposing the photoreceptor: a charging portion charging the photoreceptor; and a developing portion imparting a developer to the photoreceptor,
 wherein the exposure portion has the organic light emitting element according to  claim 2 .   
     
     
         14 . An exposure device which exposes a photoreceptor,
 the exposure device comprising a plurality of the organic light emitting elements according to  claim 2 ,   wherein the organic light emitting elements are arranged along a long axis direction of the photoreceptor to form at least one column.   
     
     
         15 . An organic photoelectric conversion element comprising: an anode; a cathode; and an organic photoelectric conversion layer disposed between the anode and the cathode,
 wherein the organic photoelectric conversion element further comprises an organic compound layer between the cathode and the organic photoelectric conversion layer, and   the organic compound layer contains an organic compound represented by the following general formula [1]   
       
         
           
           
               
               
           
         
         in the formula [1], Ar 1  and Ar 2  are each independently selected from an aromatic hydrocarbon group having 6 to 24 carbon atoms or a heteroaromatic ring group having 3 to 23 carbon atoms, 
         Ar 1  and Ar 2  each may have a substituent selected from the group consisting of a halogen atom, a cyano group, an alkyl group having 1 to 4 carbon atoms, a phenyl group, a tolyl group, a xylyl group, a mesityl group, and a cumenyl group, 
         R 1  to R 4  are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, 
         R 1  and R 2  and R 3  and R 4  each may form a benzene ring, 
         the benzene ring may have as a substituent, at least one of a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, a phenyl group with or without a substituent, and a pyridyl group with or without a substituent, and 
         X 1  and X 2  represent a sulfur atom or an oxygen atom, and 
         X 1  and X 2  represent the same atom. 
       
     
     
         16 . An image taking element comprising: a plurality of pixels; and a signal processing circuit connected to the plurality of pixels, wherein at least one pixel has the organic photoelectric conversion element according to  claim 15  and a reading circuit connected thereto. 
     
     
         17 . The image taking element according to  claim 16 ,
 wherein the pixel further has a different type of organic photoelectric conversion element, and the different type of organic photoelectric conversion element is an organic photoelectric conversion element performing photoelectric conversion of color light different from that of the organic photoelectric conversion element, and   the organic photoelectric conversion element and the different type of organic photoelectric conversion element are laminated to each other.   
     
     
         18 . An image taking device comprising: an image taking optical system; and an image taking element receiving light which passes through the image taking optical system, wherein the image taking element is the image taking element according to  claim 16 . 
     
     
         19 . The image taking device according to  claim 18 , further comprising a receiving portion receiving a signal from the outside,
 wherein the signal is a signal controlling at least one of an image taking region of the image taking device, the start of image taking, and the stop of image taking.   
     
     
         20 . The image taking device according to  claim 19 , further comprising a transmitting portion transmitting an obtained image to the outside.