US 12,245,448 B2
Heat insulating transparent tandem organic solar cells
Franky So, Raleigh, NC (US); Carr Hoi Yi Ho, Raleigh, NC (US); Xiangyu Fu, Raleigh, NC (US); and Matthew Stone, Tampa, FL (US)
Assigned to North Carolina State University, Raleigh, NC (US); and NextGen Nano LLC, London (GB)
Appl. No. 17/614,787
Filed by North Carolina State University, Raleigh, NC (US); and NextGen Nano LLC, London (GB)
PCT Filed May 28, 2020, PCT No. PCT/US2020/034928
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/243306, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/853,978, filed on May 29, 2019.
Prior Publication US 2022/0231247 A1, Jul. 21, 2022
Int. Cl. H10K 30/87 (2023.01); H10K 30/57 (2023.01); H10K 30/82 (2023.01)
CPC H10K 30/87 (2023.02) [H10K 30/57 (2023.02); H10K 30/82 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A transparent tandem organic solar cell comprising:
a transparent substrate;
a first transparent electrode disposed on a surface of the transparent substrate; a series of interconnecting organic active layers disposed on a surface of the first transparent electrode, wherein the series of organic interconnecting active layers comprises at least a front sub-cell that blocks ultraviolet wavelengths from passing through the front sub-cell; and a back sub-cell that blocks infrared wavelengths from passing through the back sub-cell; and
a distributed Bragg reflector disposed on a surface of the back sub-cell, wherein the distributed Bragg reflector reflects unblocked infrared photons at an interface between the back sub-cell and the distributed Bragg reflector;
wherein the series of interconnecting organic active layers are configured to allow wavelengths of visible light to pass through the transparent tandem organic solar cell;
wherein the transparent tandem organic solar cell further comprise a quasi-periodic polycrystal nanopattern structure with different width sizes that is positioned on the front sub-cell or the distributed Bragg reflector disposed on the surface of the back sub-cell.