Composition for organic material layer of organic light emitting device, organic light emitting device comprising same and method for manufacturing organic light emitting device

A composition for an organic material layer of an organic light emitting device, comprising:

• a first compound of the following Chemical Formula 1;
• and
• a second compound of the following Chemical Formula 2:
• wherein, in Chemical Formula 1,
• X1 and X2 are the same as or different from each other, and are each independently O;
• or S,
• N-Het is a heteroaryl group having 1 to 60 carbon atoms, which is substituted or unsubstituted and includes one or more C═N bonds,
• Z is a direct bond;
• 0;
• S;
• C(Ra)(Rb);
• or N(Rc),
• Ra to Rc are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms;
• or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms,
• R1 to R4 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a cyano group;
• a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
• or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms,
• R5 to R12 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a cyano group;
• a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
• or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms, or are bonded to an adjacent group to form a substituted or unsubstituted ring, and
• a to d are each an integer from 0 to 3, and when a to d are each 2 or higher, substituents in the parenthesis are the same or different,
• in Chemical Formula 2,
• L1 and L2 are the same as or different from each other, and are each independently a direct bond;
• a substituted or unsubstituted arylene group having 6 to 60 carbon atoms;
• or a substituted or unsubstituted heteroarylene group having 6 to 60 carbon atoms,
• m and n are each an integer from 1 to 3, and when m and n are each 2 or higher, substituents in the parenthesis are the same or different,
• Ar1 and Ar2 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
• or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms,
• Q1 and Q2 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a cyano group;
• a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms;
• a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms;
• a substituted or unsubstituted alkynyl group having 2 to 60 carbon atoms;
• a substituted or unsubstituted alkoxy group having 1 to 60 carbon atoms;
• a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms;
• a substituted or unsubstituted heterocycloalkyl group having 2 to 60 carbon atoms;
• a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
• or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms, and
• is an integer from 0 to 6, p is an integer from 0 to 4, and when o and p are each 2 or higher, substituents in the parenthesis are the same or different.