Condensed cyclic compound and organic light-emitting device including the same

A condensed cyclic compound represented by Formula 1-2 or Formula 1-4:

• in Formula 1-2,
• X1 is selected from Se, Si(R4)(R5),
• in Formula 1-4,
• X1 is selected from O, S, Se, C(R4)(R5), Si(R4)(R5), and B(R4),
• in Formula 1-2 and Formula 1-4,
• L1 are each independently selected from groups represented by Formulae 4-1 to 4-3,
• L2 and L3 are each independently selected from groups represented by Formulae 4-1 to 4-3 and 4-34,
• in Formulae 4-1 to 4-4, 4-34, * and *′ each indicates a binding site to a neighboring atom,
• a1 to a3 are each independently an integer from 0 or 1,
• Ar1 and Ar2 are each independently selected from groups represented by Formulae 9-1 to 9-12 and 9-29 to 9-52,
• in Formulae 9-1 to 9-12 and 9-29 to 9-52, Ph indicates a phenyl group, and * indicates a binding site to a neighboring atom,
• b1 and b2 are each 1,
• R1 to R5 are each independently selected from hydrogen, C1-C20 alkyl group and phenyl group,
• c1 is an integer from 0 to 3, and
• c2 and c3 are each independently an integer from 0 to 4.