Solar cell

A solar cell comprising:

• an anode;
• a cathode provided to face the anode;
• and
• a photoactive layer comprising a compound having a perovskite structure provided between the anode and the cathode,
• wherein one layer of a first organic material, one layer of a second organic material, an other layer of the first organic material, and an other layer of the second organic material are sequentially provided between the anode and the photoactive layer,
• the first organic material comprises a compound of the following Chemical Formula 1, and
• the second organic material comprises a hole transporting material having a HOMO energy level of −5 eV or less:
• wherein in Chemical Formula 1:
• R1 to R6 are each independently selected from the group consisting of hydrogen;
• a halogen group;
• a nitrile group;
• a nitro group;
• a sulfonyl group;
• a sulfoxide group;
• a sulfonamide group;
• a sulfonate group;
• a trifluoromethyl group;
• an ester group;
• an amide group;
• a substituted or unsubstituted straight- or branch-chained C1 to C12 alkoxy group;
• a substituted or unsubstituted straight- or branch-chained C1 to C12 alkyl group;
• substituted or unsubstituted straight- or branch-chained C2 to C12 alkenyl group;
• a substituted or unsubstituted aromatic or non-aromatic heterocyclic group;
• a substituted or unsubstituted aryl group;
• a substituted or unsubstituted mono- or di-arylamine group;
• and a substituted or unsubstituted aralkylamine group.