公开(公告)号：US20230096217A1

公开(公告)日：2023-03-30

申请号：US17893254

申请日：2022-08-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Won Sik YOON ,  Kwanghee KIM ,  Tae Hyung KIM ,  Eun Joo JANG ,  Enjung KIM ,  Dae-Hee LEE

IPC: H01L51/00 ,  C09K11/06 ,  C09K11/70

Abstract: An electroluminescent device including a first electrode, a second electrode, and a light emitting layer disposed between the first electrode and the second electrode, the light emitting layer including semiconductor nanoparticle(s), wherein the semiconductor nanoparticle(s) does not include cadmium, wherein the semiconductor nanoparticle(s) includes a polycyclic organic ligand including functional group linked to a C6-50 condensed aromatic group, the functional group configured to link to the semiconductor nanoparticle(s), and the C6-50 condensed aromatic group including at least three cyclic moieties that includes a first aromatic ring and a second aromatic ring, and the first aromatic ring shares two carbon atoms with a first adjacent cyclic moiety and the second aromatic ring shares two carbon atoms with the first adjacent cyclic moiety, or the second aromatic ring shares two carbon atoms with a second adjacent cyclic moiety condensed with the first adjacent cyclic moiety.

公开(公告)号：US20240014358A1

公开(公告)日：2024-01-11

申请号：US18349485

申请日：2023-07-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hong Kyu SEO ,  Soonmin CHA ,  Dongchan KIM ,  Enjung KIM ,  Taehyung KIM ,  Tae Ho KIM ,  Shin Ae JUN ,  You Jung CHUNG

IPC: H01L33/56 ,  H01L33/06 ,  H01L33/00 ,  H01L33/14

CPC classification number: H01L33/56 ,  H01L33/06 ,  H01L33/005 ,  H01L33/14 ,  H01L2933/0016 ,  H01L2933/005

Abstract: An electroluminescent device that includes a first electrode and a second electrode spaced apart from each other, a light emitting layer disposed between the first electrode and the second electrode, an electron transport layer disposed between the light emitting layer and the second electrode, and an organic layer disposed on the electron transport layer. The light emitting layer includes a plurality of semiconductor nanoparticles, the electron transport layer includes a plurality of metal oxide nanoparticles, and the organic layer includes a polymeric acid compound.

公开(公告)号：US20240381682A1

公开(公告)日：2024-11-14

申请号：US18661790

申请日：2024-05-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Woo KIM ,  You Jung CHUNG ,  Dongchan KIM ,  Enjung KIM ,  Chan Su KIM ,  Hong Kyu SEO ,  ILYOUNG LEE ,  Sungwoo HWANG

IPC: H10K50/115 ,  C01G9/02 ,  H10K50/16 ,  H10K71/12

Abstract: An electroluminescent device, a method of manufacturing the same, and a display device including the same are provided. The method of manufacturing the electroluminescent device comprises disposing a light emitting layer including a semiconductor nanoparticle on a first electrode; depositing a composition including a zinc oxide nanoparticle containing a first metal onto the light emitting layer to provide an electron transport layer; and disposing a second electrode on the electron transport layer to provide the electroluminescent device. The first metal includes an alkaline earth metal, zirconium, tungsten, titanium, yttrium, aluminum, gallium, indium, tin, cobalt, vanadium, or a combination thereof. The zinc oxide nanoparticle has a particle size of 1 nanometer or more and 50 nanometers or less. Preparation of the zinc oxide nanoparticle includes contacting a first metal precursor, a zinc precursor, a base, and a metal carbonate in an organic solvent to form the zinc oxide nanoparticle.