Matthew G Stone

US Patent:

20220231247, Jul 21, 2022

Filed:

May 28, 2020

Appl. No.:

17/614787

Inventors:

- Raleigh NC, US
CARR HOI YI HO - Raleigh NC, US
XIANGYU FU - Raleigh NC, US
MATTHEW STONE - Tampa FL, US

International Classification:

H01L 51/44

Abstract:

An exemplary transparent tandem organic solar cell comprises a transparent substrate; a first transparent electrode disposed on a surface of the transparent substrate; and a series of interconnecting organic active layers disposed on a surface of the first transparent electrode. The series of organic interconnecting active layers comprise 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. The solar cell further comprises 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. Additionally, 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 is fully transparent.