An organic photoelectronic device comprising an anode and a cathode facing each other, and an organic layer between the anode and the cathode, the organic layer including, a compound represented by the following Chemical Formula 1 included as a visible light-absorbing body; and at least one of a hole buffer material having an energy bandgap of greater than or equal to 2.8 eV and a HOMO level between a work function of the anode and a HOMO level of the compound represented by the following Chemical Formula 1, and an electron buffer material having an energy bandgap of greater than or equal to 2.8 eV and a LUMO level between a work function of the cathode and a LUMO level of the compound represented by the following Chemical Formula 1: wherein, in the above Chemical Formula 1, each of R 1 to R 12 are independently one of hydrogen, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 3 to C 30 heteroaryl group, a halogen atom, a halogen-containing group, and a combination thereof, and X is an anion; characterized in that: the hole buffer material and the electron buffer material do not absorb visible light having a wavelength region of 450 nm to 800 nm, wherein the organic photoelectronic device has a maximum absorption wavelength (λ max) at 500 nm to 600 nm, and wherein the organic photoelectronic device shows a light-absorption curve having a full width at half maximum (FWHM) of 50 nm to 150 nm. a compound represented by the following Chemical Formula 1 included as a visible light-absorbing body; and at least one of a hole buffer material having an energy bandgap of greater than or equal to 2.8 eV and a HOMO level between a work function of the anode and a HOMO level of the compound represented by the following Chemical Formula 1, and an electron buffer material having an energy bandgap of greater than or equal to 2.8 eV and a LUMO level between a work function of the cathode and a LUMO level of the compound represented by the following Chemical Formula 1: wherein, in the above Chemical Formula 1, each of R 1 to R 12 are independently one of hydrogen, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 3 to C 30 heteroaryl group, a halogen atom, a halogen-containing group, and a combination thereof, and X is an anion; characterized in that: the hole buffer material and the electron buffer material do not absorb visible light having a wavelength region of 450 nm to 800 nm, wherein the organic photoelectronic device has a maximum absorption wavelength (λ max) at 500 nm to 600 nm, and wherein the organic photoelectronic device shows a light-absorption curve having a full width at half maximum (FWHM) of 50 nm to 150 nm. each of R 1 to R 12 are independently one of hydrogen, a substituted or unsubstituted C 1 to C 30 alkyl group, a substituted or unsubstituted C 6 to C 30 aryl group, a substituted or unsubstituted C 3 to C 30 heteroaryl group, a halogen atom, a halogen-containing group, and a combination thereof, and X is an anion; characterized in that: the hole buffer material and the electron buffer material do not absorb visible light having a wavelength region of 450 nm to 800 nm, wherein the organic photoelectronic device has a maximum absorption wavelength (λ max) at 500 nm to 600 nm, and wherein the organic photoelectronic device shows a light-absorption curve having a full width at half maximum (FWHM) of 50 nm to 150 nm.