US 12,238,945 B2
Dynamic urea bond-based passivators of perovskite
Shien Ping Feng, Hong Kong (HK); and Wei Ting Wang, Hong Kong (HK)
Assigned to THE UNIVERSITY OF HONG KONG, Hong Kong (HK)
Appl. No. 18/272,356
Filed by THE UNIVERSITY OF HONG KONG, Hong Kong (HK)
PCT Filed Jan. 27, 2022, PCT No. PCT/CN2022/074284
§ 371(c)(1), (2) Date Jul. 14, 2023,
PCT Pub. No. WO2022/166750, PCT Pub. Date Aug. 11, 2022.
Claims priority of provisional application 63/145,026, filed on Feb. 3, 2021.
Prior Publication US 2024/0099037 A1, Mar. 21, 2024
Int. Cl. H10K 30/50 (2023.01); C07C 333/20 (2006.01); H10K 85/50 (2023.01); H10K 85/60 (2023.01)
CPC H10K 30/50 (2023.02) [C07C 333/20 (2013.01); H10K 85/50 (2023.02); H10K 85/60 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A passivated perovskite structure, comprising:
a perovskite layer; and
a hindered urea bond-based Lewis acid-base containing layer adjacent the perovskite layer,
wherein the hindered urea bond-based Lewis acid-base containing layer comprises a hindered urea bond-based Lewis acid-base having the formula:

OG Complex Work Unit Chemistry
wherein R1 is selected from

OG Complex Work Unit Chemistry
x is selected from 1 to 5; R2 is selected from

OG Complex Work Unit Chemistry
R3 is —CxH2x—, where x is selected from 1 to 5; and R4 is a halide.