Organic compound, solar cell, and application thereof

An organic compound, wherein the organic compound is a compound represented by formula (1) or an oxyanion salt of the compound represented by formula (1):

• wherein Ar is selected from any one of a substituted or unsubstituted aromatic group having 6 to 50 ring-forming atoms, a substituted or unsubstituted heteroaromatic group having 5 to 50 ring-forming atoms, a group represented by formula (A), and a group represented by formula (B):
• Ar′ is selected from any one of a substituted or unsubstituted aryl group having 6 to 30 ring-forming atoms and a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming atoms;
• Ar1 to Ar6 are each independently selected from any one of H, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, and a substituted or unsubstituted aromatic group having 6 to 30 ring-forming atoms, wherein at least one of Ar1 to Ar3 is selected from a substituted or unsubstituted aromatic group having 6 to 30 ring-forming atoms, and at least one of Ar4 to Ar6 is selected from a substituted or unsubstituted aromatic group having 6 to 30 ring-forming atoms;
• L is selected from a chain alkylene group having 1 to 10 carbon atoms;
• and
• R1 is an oxyacid group;
• n1 is selected from any integer from 1 to 3;
• and m1 is selected from any integer from 1 to 10.