公开(公告)号：US20210119161A1

公开(公告)日：2021-04-22

申请号：US17072436

申请日：2020-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Moon Gyu HAN ,  Heejae LEE ,  Eun Joo JANG ,  Tae Ho KIM ,  Kun Su PARK ,  Won Sik YOON ,  Hyo Sook JANG

IPC: H01L51/50

Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.

公开(公告)号：US20210091327A1

公开(公告)日：2021-03-25

申请号：US17026622

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Ho KIM ,  Moon Gyu HAN ,  Hongkyu SEO ,  Heejae LEE ,  Eun Joo JANG

IPC: H01L51/50 ,  C09K11/06

Abstract: An electroluminescent device and a display device including the same are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; a light emitting layer including a first light emitting layer disposed on the hole transport layer, the first emitting layer including a first quantum dot, and a second light emitting layer including a second quantum dot and an n-type organic semiconductor, the second light emitting layer disposed on the first light emitting layer; an electron transport layer disposed on the second light emitting layer; and a second electrode disposed on the electron transport layer.

公开(公告)号：US20200343487A1

公开(公告)日：2020-10-29

申请号：US16857727

申请日：2020-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu HAN ,  Kwanghee KIM ,  Heejae LEE ,  Eun Joo JANG ,  Dae Young CHUNG

IPC: H01L51/52 ,  H01L51/50 ,  H01L51/00 ,  C09K11/88

Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color.

公开(公告)号：US20160020257A1

公开(公告)日：2016-01-21

申请号：US14589612

申请日：2015-01-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gae Hwang LEE ,  Kyung Bae PARK ,  Sung Young YUN ,  Yong Wan JIN ,  Moon Gyu HAN

IPC: H01L27/30 ,  H01L51/44

CPC classification number: H01L27/307 ,  H01L51/0078 ,  H01L51/008 ,  H01L51/441 ,  H01L2251/308 ,  Y02E10/549

Abstract: An organic photoelectronic device includes a first electrode having a plurality of nanopatterns arranged at a regular interval, a second electrode facing the first electrode and an active layer between the first electrode and the second electrode, the active layer absorbing light in at least one wavelength of a visible ray region.

Abstract translation: 有机光电子器件包括具有以规则间隔布置的多个纳米图案的第一电极，面对第一电极的第二电极和在第一电极和第二电极之间的有源层，有源层吸收至少一个波长的 可见光区域。

公开(公告)号：US20240224796A1

公开(公告)日：2024-07-04

申请号：US18600030

申请日：2024-03-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu HAN ,  Dae Young CHUNG ,  Kwanghee KIM ,  Eun Joo JANG ,  Chan Su KIM ,  Kun Su PARK ,  Won Sik YOON

IPC: H10K85/60 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K71/00 ,  H10K71/12 ,  H10K102/00

CPC classification number: H10K85/633 ,  H10K85/6572 ,  H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K71/00 ,  H10K71/12 ,  H10K2102/331 ,  H10K2102/351

Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.

公开(公告)号：US20240224562A1

公开(公告)日：2024-07-04

申请号：US18400128

申请日：2023-12-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chan Su KIM ,  Sung Woo KIM ,  Ilyoung LEE ,  You Jung CHUNG ,  Moon Gyu HAN

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

CPC classification number: H10K50/115 ,  H10K50/16 ,  H10K71/12

Abstract: Disclosed are an electroluminescent device including a first electrode and a second electrode spaced apart from each other; a light-emitting layer disposed between the first and second electrodes; and an electron transport layer between the light-emitting layer and the second electrode; a production method thereof; and a display device including the same. The light-emitting layer includes a semiconductor nanoparticle, the electron transport layer includes a zinc oxide nanoparticle having a size of 1 nm or more to 15 nm or less, and the zinc oxide nanoparticle further includes magnesium and aluminum, and an amount of aluminum in the zinc oxide nanoparticle is greater than or equal to about 0.5 mol % and less than or equal to about 30 mol % based on a total amount of zinc, magnesium, and aluminum.

公开(公告)号：US20230276643A1

公开(公告)日：2023-08-31

申请号：US18300665

申请日：2023-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejae LEE ,  Sung Woo KIM ,  Eun Joo JANG ,  Dae Young CHUNG ,  Moon Gyu HAN

IPC: H10K50/115 ,  H10K50/15 ,  H10K50/17

CPC classification number: H10K50/115 ,  H10K50/15 ,  H10K50/171

Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.

公开(公告)号：US20210135138A1

公开(公告)日：2021-05-06

申请号：US17085167

申请日：2020-10-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee KIM ,  Moon Gyu HAN ,  Eun Joo JANG ,  Hyo Sook JANG

IPC: H01L51/50 ,  H01L51/56 ,  C09K11/88 ,  C09K11/02

Abstract: A light emitting device including a first electrode and a second electrode spaced from each other, and, a light emitting film between the first electrode and the second electrode, wherein the light emitting film has a first surface facing the second electrode and a second surface opposite thereto, the light emitting film includes a quantum dot layer including a plurality of quantum dots and a matrix including a metal chalcogenide, the plurality of quantum dots includes selenium, the matrix covers at least a portion of the quantum dot layer, the metal chalcogenide comprises zinc and sulfur, and in an X-ray photoelectron spectroscopic analysis of the first surface of the light emitting film, a mole ratio of zinc with respect to selenium is greater than or equal to about 2:1 and a mole ratio of sulfur with respect to selenium is greater than or equal to about 1.1:1.

公开(公告)号：US20210005834A1

公开(公告)日：2021-01-07

申请号：US16921188

申请日：2020-07-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejae LEE ,  Sung Woo KIM ,  Eun Joo JANG ,  Dae Young CHUNG ,  Moon Gyu HAN

IPC: H01L51/50

Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.

公开(公告)号：US20200028105A1

公开(公告)日：2020-01-23

申请号：US16512954

申请日：2019-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hongkyu SEO ,  Moon Gyu HAN ,  Eun Joo JANG ,  Sujin PARK ,  Dae Young CHUNG

IPC: H01L51/50 ,  H01L33/50 ,  H01L51/44

Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles.