US 12,384,715 B2
Photodeposition of metal oxides for electrochromic devices
Curtis Berlinguette, Vancouver (CA); and Wei Cheng, Vancouver (CA)
Assigned to Miru Smart Technologies Corp., Vancouver (CA)
Appl. No. 16/632,636
Filed by Miru Smart Technologies Corp., Vancouver (CA)
PCT Filed Jul. 20, 2018, PCT No. PCT/CA2018/050885
§ 371(c)(1), (2) Date Jan. 21, 2020,
PCT Pub. No. WO2019/014776, PCT Pub. Date Jan. 24, 2019.
Claims priority of provisional application 62/534,785, filed on Jul. 20, 2017.
Prior Publication US 2020/0165161 A1, May 28, 2020
Int. Cl. B05D 3/06 (2006.01); B05D 5/12 (2006.01); C03C 17/25 (2006.01); C23C 14/08 (2006.01); C23C 14/58 (2006.01); C23C 16/40 (2006.01); G02F 1/1523 (2019.01); G02F 1/1524 (2019.01)
CPC C03C 17/25 (2013.01) [B05D 3/065 (2013.01); B05D 5/12 (2013.01); C03C 17/256 (2013.01); C23C 14/088 (2013.01); C23C 14/5853 (2013.01); C23C 16/40 (2013.01); G02F 1/1524 (2019.01); G02F 1/1525 (2013.01); C03C 2217/212 (2013.01); C03C 2217/217 (2013.01); C03C 2217/218 (2013.01); C03C 2217/219 (2013.01); C03C 2218/116 (2013.01); C03C 2218/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A process for forming an electrochromic material suitable for use in an electrochromic device, the process comprising:
providing a transparent conductive substrate;
coating the transparent conductive substrate with a solution of one or more metal precursors, wherein a metal precursor comprises a ligand selected from chloride, bromide and nitrate and is converted to a metal oxide upon exposure to UV radiation and/or ozone; and
exposing the coated transparent conductive substrate to UV radiation and/or ozone in an aerobic atmosphere at ambient temperature and ambient pressure to effect conversion of the one or more metal precursors to a metal oxide film on the transparent conductive substrate without application of a heat treatment with an external heat source, thereby forming the electrochromic material,
wherein the electrochromic device comprises:
a first electrode comprising the electrochromic material,
a counter electrode, and
an ion-conductor layer for conducting ions between the first electrode and the counter electrode.