US 12,457,895 B2
Semi-transparent perovskite-based photovoltaic cells and process for preparing them
Paolo Biagini, Novara (IT); Riccardo Po', Novara (IT); Francesco Bisconti, Monteroni di Lecce (IT); Antonella Giuri, Salice Salentino (IT); Aurora Rizzo, Lecce (IT); and Silvia Colella, Bari (IT)
Assigned to ENI S.P.A., Rome (IT)
Appl. No. 18/010,967
Filed by ENI S.P.A., Rome (IT)
PCT Filed Jun. 16, 2021, PCT No. PCT/IB2021/055299
§ 371(c)(1), (2) Date May 18, 2023,
PCT Pub. No. WO2021/255657, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 102020000014470 (IT), filed on Jun. 17, 2020.
Prior Publication US 2023/0232705 A1, Jul. 20, 2023
Int. Cl. H10K 85/50 (2023.01); C09K 11/02 (2006.01); H10K 30/20 (2023.01); H10K 30/50 (2023.01); H10K 30/82 (2023.01); H10K 30/85 (2023.01); H10K 30/86 (2023.01); H10K 50/15 (2023.01); H10K 102/10 (2023.01)
CPC H10K 85/50 (2023.02) [C09K 11/025 (2013.01); H10K 30/82 (2023.02); H10K 30/85 (2023.02); H10K 30/86 (2023.02); H10K 50/15 (2023.02); H10K 30/50 (2023.02); H10K 2102/103 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A semi-transparent perovskite-based photovoltaic cell, comprising a photoactive perovskite layer formed from perovskite precursors, wherein the photoactive perovskite layer comprises at least one polysaccharide-based inert polymer in an amount ranging between 1.5% by weight and 2.8% by weight, with respect to the total weight of the perovskite precursors, said polysaccharide-based inert polymer being selected from methylcellulose, 2-hydroxyethyl cellulose (HEC), methyl-2-hydroxyethyl cellulose, hydroxypropyl methyl cellulose, cellulose acetate phthalate, cellulose propionate, corn starch, potato starch, rice starch, 2-hydroxyethyl starch, carboxymethyl starch, glycogen.