Organic compound and organic light-emitting device comprising same

A compound represented by Chemical Formula 1-1 or Chemical Formula 1-2:

• wherein:
• R1 to R8, which are identical or different, are independently deuterium, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group;
• R9, which is identical or different, is independently hydrogen, deuterium, or a substituted or unsubstituted alkyl group;
• R10 to R16, which are identical or different, are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted aryl group;
• L1, which is identical or different, is independently a direct bond or a substituted or unsubstituted heteroarylene group;
• Ra, which is identical or different, is independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aliphatic hydrocarbon ring group, a substituted or unsubstituted aryl group wherein three or more ring are condensed, or a substituted or unsubstituted heteroaryl group, or is bonded to an adjacent substituent to form an aliphatic hydrocarbon ring;
• Rb, which is identical or different, is independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group;
• m is an integer from 1 to 6, 6;
• n is an integer 1 or 2;
• a1 is an integer from 1 to 5;
• b1 is an integer from 1 to 9;
• and
• if each of m, n, a1 or b1 is 2 or greater, R9's, L1s, Ras, or Rbs are identical or different.