Heterocyclic compound and organic solar cell comprising same

A heterocyclic compound represented by the following Chemical Formula 1:

• in Chemical Formula 1,
• m1, m2, n1, and n2 are each an integer from 1 to 3,
• when m1, m2, n1, and n2 are each 2 or more, two or more structures in the square bracket are the same as or different from each other,
• L1, L2, and L3 are the same as or different from each other, and are each independently a direct bond;
• or a divalent linking group,
• X1 to X10 are the same as or different from each other, and are each independently CRR′, NR, O, SiRR′, PR, S, GeRR′, Se, or Te,
• R, R′, R1 to R12, and R21 to R28 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a nitrile group;
• a nitro group;
• an imide group;
• an amide group;
• a hydroxy group;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryloxy group;
• a substituted or unsubstituted alkylthioxy group;
• a substituted or unsubstituted arylthioxy group;
• a substituted or unsubstituted alkylsulfoxy group;
• a substituted or unsubstituted arylsulfoxy group;
• a substituted or unsubstituted alkenyl group;
• a substituted or unsubstituted silyl group;
• a substituted or unsubstituted boron group;
• a substituted or unsubstituted alkylamine group;
• a substituted or unsubstituted aralkylamine group;
• a substituted or unsubstituted arylamine group;
• a substituted or unsubstituted heteroarylamine group;
• a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heterocyclic group comprising one or more of N, O, and S atoms, and
• A1 and A2 are the same as or different from each other, and are each independently a structure which acts as an electron acceptor.