US 12,136,680 B2
Architecture for efficient monolithic bifacial perovskite-CdSeTe tandem thin film solar cells and modules
Zhaoning Song, Toledo, OH (US); Kamala Khanal Subedi, Toledo, OH (US); Randy Ellingson, Toledo, OH (US); and Yanfa Yan, Toledo, OH (US)
Assigned to The University of Toledo, Toledo, OH (US)
Filed by The University of Toledo, Toledo, OH (US)
Filed on Nov. 18, 2021, as Appl. No. 17/529,682.
Claims priority of provisional application 63/127,280, filed on Dec. 18, 2020.
Prior Publication US 2022/0199845 A1, Jun. 23, 2022
Int. Cl. H01L 31/073 (2012.01); H01L 31/18 (2006.01)
CPC H01L 31/073 (2013.01) [H01L 31/1884 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A method of preparing a bifacial Perovskite-CdSeTe tandem solar cell comprising in the following order:
preparing a transparent conducting oxide (TCO) electrode coated glass substrate;
depositing an n-type window layer;
depositing a CdSeTe absorber layer;
forming a back buffer surface passivation layer, the n-type window layer, the CdSeTe absorber layer and the back buffer surface passivation layer forming a CdSeTe subcell;
depositing an interconnecting layer;
depositing an electron transport layer (ETL);
depositing a perovskite absorber layer;
depositing a hole transport layer (HTL), the electron transport layer (ETL), the perovskite absorber layer, and the hole transport layer (HTL) forming a perovskite subcell;
depositing a front TCO layer;
depositing a front metal grid; and
forming the bifacial Perovskite-CdSeTe tandem solar cell.