US 12,336,305 B1
Photovoltaic cells with bypass diodes
Colin David Bailie, Morgan Hill, CA (US); and Chris Eberspacher, Palo Alto, CA (US)
Assigned to Tandem PV
Filed by Tandem PV, San Jose, CA (US)
Filed on Aug. 2, 2024, as Appl. No. 18/793,358.
Claims priority of provisional application 63/544,141, filed on Oct. 13, 2023.
Int. Cl. H10F 19/75 (2025.01); H10F 19/90 (2025.01); H10F 71/00 (2025.01); H10F 77/80 (2025.01)
CPC H10F 19/75 (2025.01) [H10F 19/902 (2025.01); H10F 71/00 (2025.01); H10F 77/80 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A photovoltaic device comprising:
a plurality of photovoltaic cells coupled in series, wherein each of the photovoltaic cells comprise:
a first contact layer;
a first charge transport layer (CTL) disposed over the first contact layer;
an absorber layer disposed over the first CTL;
a second charge transport layer (CTL) disposed over the absorber layer; and
a second contact layer disposed over the second CTL,
wherein each photovoltaic cell in the plurality of photovoltaic cells includes a diode region that comprises a feature,
wherein the feature extends through the absorber layer and comprises a portion of the first CTL and a portion of the second CTL,
wherein the diode region essentially comprises the first contact layer, the first CTL, the second CTL, and the second contact layer,
wherein the first CTL and the second CTL are in direct contact with each other within the diode region.