Patent ID: 11889709
Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A multi-junction photosensitive device comprising:
a first subcell disposed on a reflective substrate, wherein the first subcell comprises at least a first photoactive layer situated on a first transparent contact wherein the first transparent contact is precoated with a noble metal;
a second subcell disposed on a transparent substrate, wherein the second subcell comprises at least a second photoactive layer situated on a second transparent contact wherein the second transparent contact is precoated with a noble metal, wherein the first and second subcells are located between the reflective substrate and the transparent substrate in a stacked configuration, and wherein the first and second subcells are cold-weld bonded to one another by a metal grid that physically and electrically interconnects the subcells by applying pressure on each of the first transparent contact and the second transparent contact, and
at least one optical filter layer located between the first and second subcells,
wherein the first photoactive layer comprises PbS quantum dots and the second photoactive layer comprises an organic photovoltaic,
wherein the first and second photoactive layers absorb different wavelengths of light.