US 11,810,731 B2
Photovoltaic cells
Israel Patla, Nes Ziona (IL); Faina Kogan, Nes Ziona (IL); Itay Eyal, Nes Ziona (IL); Yaron Grinwald, Nes Ziona (IL); and Mark Sandler, Nes Ziona (IL)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,587.
Application 17/484,587 is a continuation in part of application No. 17/324,719, filed on May 19, 2021.
Prior Publication US 2022/0375695 A1, Nov. 24, 2022
Int. Cl. H01L 31/00 (2006.01); H01G 9/20 (2006.01); C09D 11/107 (2014.01); C09D 11/037 (2014.01); C09D 11/52 (2014.01); H10K 71/13 (2023.01)
CPC H01G 9/2059 (2013.01) [C09D 11/037 (2013.01); C09D 11/107 (2013.01); C09D 11/52 (2013.01); H10K 71/13 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A liquid electrophotographic (LEP) photovoltaic ink composition comprising:
a dispersion of a material with a perovskite structure, a thermoplastic resin and conductive particles in a carrier liquid;
wherein the material with a perovskite structure has a chemical formula selected from ABX3 and A2BX6;
wherein A is a cation, B is a cation and X is an anion; and
wherein the thermoplastic resin comprises:
a copolymer of an alkylene monomer and a monomer having acidic side groups; and/or
a copolymer of an alkylene monomer and an ethylenically unsaturated monomer comprising an epoxide; and/or
a copolymer of an alkylene monomer, an ethylenically unsaturated monomer comprising an epoxide, and a monomer selected from a monomer having acidic side groups, a monomer having ester side groups and a mixture thereof.