US 12,448,565 B2
Solid polymer composition, a self-supporting film and a light emitting device
Norman Albert Lüchinger, Meilen (CH)
Assigned to Avantama AG, Stäfa (CH)
Appl. No. 17/773,090
Filed by Avantama AG, Stäfa (CH)
PCT Filed Jul. 5, 2021, PCT No. PCT/EP2021/068523
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2022/008451, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 20184584 (EP), filed on Jul. 7, 2020.
Prior Publication US 2024/0141229 A1, May 2, 2024
Int. Cl. H10K 50/115 (2023.01); C08F 122/10 (2006.01); C09K 11/06 (2006.01); C09K 11/62 (2006.01); C09K 11/66 (2006.01); C09K 11/70 (2006.01); C09K 19/38 (2006.01)
CPC C09K 11/664 (2013.01) [C08F 122/10 (2013.01); C09K 11/06 (2013.01); C09K 11/623 (2013.01); C09K 11/70 (2013.01); C09K 19/3838 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A self-supporting film having a thickness of 0.005-10 mm comprising
green luminescent crystals
red luminescent crystals, and
a polymer,
wherein the green luminescent crystals are perovskite crystals selected from compounds of formula (I):
[M1A1]aM2bXc  (I), wherein:
A1 represents one or more organic cations,
M1 represents one or more alkaline metals,
M2 represents one or more metals other than M1,
X represents one or more anions selected from the group consisting of halides, pseudohalides and sulfides,
a represents 1-4,
b represents 1-2,
C represents 3-9, and
wherein either M1, or A1, or M1 and A1 are present;
wherein the red luminescent crystals are zincblende or wurzite, crystals selected from compounds of formula (II)
[M3M3′][YY′]  (II), wherein:
M3, M3′ represent Al, Ga, In, and
Y, Y′ represent N, P, As, Sb, and
M3′, Y′ may or may not be present,
or
M3, M3′ represent Zn, Cd, Be, and
Y, Y′ represent S, Se, Te, and
M3′, Y′ may or may not be present, and
wherein a concentration of M2 is 5-200 mg/m2,
wherein a concentration of M3+M3′ is 30-250 mg/m2,
wherein the polymer comprises an acrylate,
wherein the polymer has a molar ratio of the sum of (oxygen+nitrogen) to carbon z, wherein z≤0.4.