Compound and photoelectric device, image sensor, and electronic device including the same

A compound represented by Chemical Formula 1:

• wherein, in Chemical Formula 1,
• Ar3 is a cyclic group represented by Chemical Formula 2A:
• wherein, in Chemical Formula 2A,
• Y1 is one of N or CRa,
• wherein Ra is one of hydrogen, deuterium, or a substituted or unsubstituted C1 to C10 alkyl group,
• R11, R12, R13, R14, and R15 are one of hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C4 to C30 heteroaryl group, a halogen, a cyano group (—CN), a cyano-containing group, or a combination thereof, or R12 and R13 and R14 and R15 are independently link with each other to provide an aromatic ring,
• m1 is 0 or 1,
• n in Chemical Formula 2A is 0 or 1, and
• * is a linking point,
• R1 to R3 are independently one of hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a halogen, a cyano group (—CN), a cyano-containing group, or a combination thereof,
• R1 and R2 independently are present or linked with each other to provide a ring,
• Ar1 and Ar2 are independently one of a substituted or unsubstituted C6 to C30 arene group, a substituted or unsubstituted C3 to C30 heteroarene group, or a combination thereof in a condensed ring, and
• G is one of —(CRdRe)n—, —O—, —S—, —Se—, —N═, —NRf—, —SiRgRh—, —SiRggRhh—, —GeRiRj—, —GeRiiRjj, —(C(Rm)═C(Rn))—, —(C(Rmm)═C(Rnn))—, or a single bond, wherein Rd, Re, Rf, Rg, Rh, Ri, Rj, Rm, and Rn are independently one of hydrogen, a halogen, a substituted or unsubstituted C1 to C10 alkyl group, or a substituted or unsubstituted C6 to C10 aryl group, wherein Rgg, Rhh, Rii, Rjj, Rmm, and Rnn are independently one of a substituted or unsubstituted C1 to C10 alkyl group, or a substituted or unsubstituted C6 to C10 aryl group, and at least one pair of Rgg and Rhh, Rii and Rjj, or Rmm and Rnn are linked with each other to provide a ring structure, and
• n in —(CRdRe)n— is 1 or 2.