Optoelectronic device including a metal layer pattern including a metal having a negative dielectric constant and image sensor and electronic device including the same

An optoelectronic device, comprising:

• a first electrode and a second electrode facing each other;
• a metal layer pattern between the first electrode and the second electrode;
• a buffer layer covering the metal layer pattern;
• and
• a photoelectric conversion layer on the buffer layer, wherein
• the metal layer pattern includes a metal having a negative dielectric constant,
• the buffer layer includes a compound selected from silicon nitride (SiNx, 0<x<1), silicon oxynitride (SiOyNz, 0<y<0.5, 0<z≤1), P-doped silicon oxynitride (SiOyNz:P, 0<y<0.5, 0<z≤1), and a combination thereof,
• the buffer layer includes a first electron blocking layer including silicon nitride (SiNx, 0<x<1), and
• the buffer layer includes a second electron blocking layer including silicon oxynitride (SiOyNz, 0<y<0.5, 0<z≤1), P-doped silicon oxynitride (SiOyNz:P, 0<y<0.5, 0<z≤1), or a combination thereof.

An image sensor comprising:

• an optoelectronic device comprising a first electrode and a second electrode facing each other, a metal layer pattern between the first electrode and the second electrode, a buffer layer covering the metal layer pattern, and a photoelectric conversion layer on the buffer layer, wherein
• the metal layer pattern includes a metal having a negative dielectric constant,
• the buffer layer includes a compound selected from silicon nitride (SiNx, 0<x<1), silicon oxynitride (SiOy,Nz, 0<y<0.5, 0<z≤1), P-doped silicon oxynitride (SiOyNz:P, 0<y<0.5, 0<z≤1), and a combination thereof,
• the image sensor includes a semiconductor substrate integrated with a plurality of first photo-sensing devices sensing light in a blue wavelength region and a plurality of second photo-sensing devices sensing light in a red wavelength region,
• the optoelectronic device is on the semiconductor substrate,
• the optoelectronic device selectively absorbs light in a green wavelength region, and
• the optoelectronic device is an organic optoelectronic device.