公开(公告)号：US20230121042A1

公开(公告)日：2023-04-20

申请号：US17966926

申请日：2022-10-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwanghee KIM ,  Taehyung KIM ,  Hong Kyu SEO ,  Wonsik YOON ,  Eun Joo JANG

IPC: H01L51/50 ,  H01L51/56

Abstract: An electroluminescent device including a first electrode; a second electrode; a light emitting layer disposed between the first electrode and the second electrode; and an electron transport layer disposed between the light emitting layer and the second electrode, wherein the light emitting layer includes semiconductor nanoparticles, wherein the electron transport layer includes a plurality of metal oxide nanoparticles, and wherein the electron transport layer further includes a polycarboxylic acid compound and a halogen.

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：US20240224556A1

公开(公告)日：2024-07-04

申请号：US18399957

申请日：2023-12-29

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： You Jung CHUNG ,  Sung Woo KIM ,  Dongchan KIM ,  Ilyoung LEE ,  Tae Ho KIM ,  Hong Kyu SEO

IPC: H10K50/11 ,  C09K11/08 ,  H10K50/16 ,  H10K71/12

CPC classification number: H10K50/11 ,  C09K11/0811 ,  H10K50/16 ,  H10K71/12

Abstract: A method of producing an electroluminescent device, the method including: disposing a light emitting layer including a semiconductor nanoparticle on a first electrode; applying a composition including a zinc oxide nanoparticle onto the light emitting layer to form an electron transport layer, the zinc oxide nanoparticle including a first metal and an alkali metal; and disposing the second electrode on the electron transport layer to produce the electroluminescent device, wherein a preparation of the zinc oxide nanoparticle includes admixing a first solution including a zinc precursor and a first metal precursor in a solvent with a second base and optionally a first base to prepare the zinc oxide nanoparticle, wherein the first base includes an organic base containing a C1 to C50 organic group, and the second base includes an inorganic base including the alkali metal.

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.

公开(公告)号：US20230209848A1

公开(公告)日：2023-06-29

申请号：US18057242

申请日：2022-11-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hong Kyu SEO ,  Kwanghee KIM ,  Kunsu PARK ,  Eun Joo JANG ,  Hyo Sook JANG ,  You Jung CHUNG ,  Soonmin CHA

IPC: H10K50/11 ,  H10K50/16 ,  H10K50/17

CPC classification number: H01L51/5004 ,  H01L51/508 ,  H01L51/5092 ,  H01L2251/303

Abstract: A quantum dot device and an electronic device. The quantum dot device includes a first electrode and an opposite facing second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, a first electron auxiliary layer proximate to the light emitting layer and disposed between the second electrode and the light emitting layer and including a first electron auxiliary material, a second electron auxiliary layer proximate to the second electrode and disposed between the second electrode and the light emitting layer and including a second electron auxiliary material, and an insertion layer disposed between the first electron auxiliary layer and the second electron auxiliary layer and including an inorganic material, wherein a HOMO energy level of the inorganic material is deeper than a HOMO energy level of the first electron auxiliary material, and a HOMO energy level of the second electron auxiliary material, respectively.

公开(公告)号：US20230133351A1

公开(公告)日：2023-05-04

申请号：US18050535

申请日：2022-10-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwanghee KIM ,  Hong Kyu SEO ,  Heejae LEE ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: H01L51/50 ,  H01L51/56 ,  C09K11/88 ,  C01G9/00

Abstract: An electroluminescent device including an anode; a cathode; a light emitting layer disposed between the anode and the cathode; and an electron transport layer disposed between the light emitting layer and the cathode, wherein the light emitting layer includes a plurality of semiconductor nanoparticles, the electron transport layer includes zinc oxide nanoparticles including a Group IIA metal and an acid salt of an alkali metal that has an oxycarbonyl moiety, and the zinc oxide nanoparticles have an average size of less than or equal to about 20 nanometers (nm).