Organic photoelectric conversion element, image pickup element, and image pickup apparatus

Abstract

The present disclosure provides an organic compound represented by general formula [1] below.In formula [1], Ar1 and Ar2 each represent an alkyl group having 1 to 8 carbon atoms, an aromatic hydrocarbon group having 6 to 18 carbon atoms, or a heteroaromatic group having 3 to 17 carbon atoms. Ar1 and Ar2 may be the same or different. Ar3 and Ar4 are each a substituent having a carbazolyl group. Ar3 and Ar4 may be the same or different. Ar1 to Ar4 may be substituted. At least one of Ar1 to Ar4 has a tert-butyl group. The total number of tert-butyl groups in one molecule of the organic compound is 2 or more.

1 . An organic device comprising:
 an anode;   a cathode; and   an organic compound layer being disposed between the anode and the cathode,   wherein the organic compound layer has a layer containing an organic compound represented by general formula [1]:                         wherein Ar 1  and Ar 2  may be the same or different and represent an aromatic hydrocarbon group having 6 to 18 carbon atoms or a heteroaromatic group having 3 to 17 carbon atoms,   Ar 3  and Ar 4  may be the same or different and are selected from the group consisting of substituents represented by general formulae [2a] to [2c], in which * indicates a bonding position to a phenyl group represented by the general formula [1]:                                                                     Ar 1  to Ar 4  are each optionally substituted with a substituent selected from the group consisting of a halogen atom, a cyano group, an alkyl group having 1 to 8 carbon atoms, and an alkoxy group having 1 to 8 carbon atoms, the alkyl group being optionally substituted with a fluorine atom, provided that at least one of Ar 1  to Ar 4  has a tert-butyl group, and   a total number of tert-butyl groups in one molecule of the organic compound is 2 or more.   
     
     
         2 . The organic device according to  claim 1 , wherein Ar 1  and Ar 2  are each a phenyl group, a naphthyl group, a pyridyl group, a benzothienyl group, or a benzofuranyl group. 
     
     
         3 . The organic device according to  claim 1 , wherein Ar 3  and Ar 4  are each the substituent represented by formula [2a]. 
     
     
         4 . The organic device according to  claim 1 , wherein the total number of tert-butyl groups in one molecule of the organic compound is 4 or more. 
     
     
         5 . The organic device according to  claim 1 , wherein the total number of tert-butyl groups in one molecule of the organic compound is 6 or more. 
     
     
         6 . The organic device according to  claim 1 , wherein the organic compound layer includes a first organic compound layer and a second organic compound layer, the second organic compound layer being disposed between the first organic compound layer and the cathode, and
 wherein the layer containing the organic compound represented by general formula [1] is the second organic compound layer.   
     
     
         7 . The organic device according to  claim 6 , wherein the second organic compound layer is in contact with the cathode. 
     
     
         8 . The organic device according to  claim 6 , wherein the first organic compound layer is a photoelectric conversion layer, and the photoelectric conversion layer contains a fullerene and a fullerene analogue. 
     
     
         9 . The organic device according to  claim 6 , wherein the organic compound layer includes a third organic compound layer, the third organic compound layer being disposed between the first organic compound layer and the anode, and
 the third organic compound layer contains a fullerene and a fullerene analogue.   
     
     
         10 . The organic device according to  claim 9 , wherein the third organic compound layer is in contact with the anode. 
     
     
         11 . An image pickup element comprising:
 a plurality of photoelectric conversion elements;   a readout circuit connected to the photoelectric conversion elements; and   a signal processing circuit connected to the readout circuit,   wherein the photoelectric conversion elements are each the organic device according to  claim 1 .   
     
     
         12 . An image pickup apparatus comprising:
 an optical system including a lens; and   an image pickup element that receives light that has passed through the optical system,   wherein the image pickup element is the image pickup element according to  claim 11 .   
     
     
         13 . An image pickup apparatus comprising:
 a housing provided with a joint connectable to an optical system including a plurality of lenses; and   an image pickup element housed in the housing,   wherein the image pickup element is the image pickup element according to  claim 11 .   
     
     
         14 . The image pickup apparatus according to  claim 12 , wherein the image pickup apparatus is a digital camera or a digital still camera. 
     
     
         15 . The image pickup apparatus according to  claim 12 , further comprising a communication unit that transmits or receives information to or from an outside.