US 12,224,381 B2
Element and electronic device having a mixed layer of quantum dots and nanoparticles
Kenji Kimoto, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/639,531
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Sep. 2, 2019, PCT No. PCT/JP2019/034455
§ 371(c)(1), (2) Date Mar. 1, 2022,
PCT Pub. No. WO2021/044493, PCT Pub. Date Mar. 11, 2021.
Prior Publication US 2022/0328730 A1, Oct. 13, 2022
Int. Cl. H01L 33/50 (2010.01); H01L 33/38 (2010.01)
CPC H01L 33/502 (2013.01) [H01L 33/38 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An element comprising:
a first electrode;
a second electrode;
a quantum dot phosphor layer located between the first electrode and the second electrode and including quantum dot phosphor particles;
a first carrier transport layer located between the first electrode and the quantum dot phosphor layer and formed of a continuous film of a first carrier transport material; and
a mixed layer located between the first carrier transport layer and the quantum dot phosphor layer and including (i) the quantum dot phosphor particles, and (ii) nanoparticles formed of a second carrier transport material,
wherein a part of the quantum dot phosphor particles included in the mixed layer is in contact with the first carrier transport layer.