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公开(公告)号：US20240090252A1
公开(公告)日：2024-03-14
申请号：US18463385
申请日：2023-09-08
发明人： Sung Woo KIM , Tae Ho KIM , You Jung CHUNG , Taehyung KIM , Ilyoung LEE , Heejae LEE , Moon Gyu HAN
IPC分类号： H10K50/115 , C09K11/54 , C09K11/62 , H10K50/16
CPC分类号： H10K50/115 , C09K11/54 , C09K11/623 , H10K50/16 , B82Y20/00
摘要： An electroluminescent device including a first electrode and a second electrode facing each other; 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. The light emitting layer includes a plurality of semiconductor nanoparticles, and the electron transport layer includes a plurality of zinc oxide nanoparticles, the zinc oxide nanoparticles further include magnesium and gallium.
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公开(公告)号：US20210135139A1
公开(公告)日：2021-05-06
申请号：US17085923
申请日：2020-10-30
发明人： Heejae LEE , Moon Gyu HAN , Sung Woo KIM , Tae Ho KIM , Kun Su PARK , Eun Joo JANG , Dae Young CHUNG
IPC分类号： H01L51/50
摘要： An electroluminescent device includes a first electrode and a second electrode facing each other, and a light emitting layer disposed between the first electrode and the second electrode, where the light emitting layer includes a first light emitting layer including a first quantum dot and a second light emitting layer including a second quantum dot and an n-type metal oxide.
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公开(公告)号：US20210257551A1
公开(公告)日：2021-08-19
申请号：US17171008
申请日：2021-02-09
发明人： Won Sik YOON , Moon Gyu HAN , Kwanghee KIM , Heejae LEE , Eun Joo JANG , Tae Hyung KIM , Hyo Sook JANG
IPC分类号： H01L51/00
摘要： A quantum dot device including a first electrode and a second electrode each having a surface opposite the other, a quantum dot layer disposed between the first electrode and the second electrode, an electron transport layer disposed between the quantum dot layer and the second electrode and including first inorganic nanoparticles and a first organic material, and an electron injection layer disposed between the electron transport layer and the second electrode and including second inorganic nanoparticles and a second organic material, wherein a ratio by weight of an amount of the second organic material to a total amount of the second inorganic nanoparticles and the second organic material in the electron injection layer is less than a ratio by weight of an amount of the first organic material to a total amount of the first inorganic nanoparticles and the first organic material in the electron transport layer. An electronic device including the quantum dot device.
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公开(公告)号：US20200335715A1
公开(公告)日：2020-10-22
申请号：US16851276
申请日：2020-04-17
发明人： Dae Young CHUNG , Kwanghee KIM , Eun Joo JANG , Tae Hyung KIM , Hongkyu SEO , Heejae LEE , Jaejun CHANG
摘要： A light emitting device including a first electrode and a second electrode, and an emission layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the emission layer and the first electrode, and a second charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer comprises a first emission layer contacting the first charge auxiliary layer, a second emission layer disposed on the first emission layer, and a third emission layer disposed on the second emission layer. The hole mobility of the first emission layer decreases sequentially from the first emission layer to the third emission layer.
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公开(公告)号：US20230276643A1
公开(公告)日：2023-08-31
申请号：US18300665
申请日：2023-04-14
发明人： Heejae LEE , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG , Moon Gyu HAN
IPC分类号： H10K50/115 , H10K50/15 , H10K50/17
CPC分类号： H10K50/115 , H10K50/15 , H10K50/171
摘要： 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.
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6.发明申请公开(公告)号：US20230133351A1
公开(公告)日：2023-05-04
申请号：US18050535
申请日：2022-10-28
发明人： Kwanghee KIM , Hong Kyu SEO , Heejae LEE , Eun Joo JANG , Hyo Sook JANG
摘要： 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).
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公开(公告)号：US20210005834A1
公开(公告)日：2021-01-07
申请号：US16921188
申请日：2020-07-06
发明人： Heejae LEE , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG , Moon Gyu HAN
IPC分类号： H01L51/50
摘要： 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.
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8.发明公开公开(公告)号：US20230345753A1
公开(公告)日：2023-10-26
申请号：US18304714
申请日：2023-04-21
发明人： Moon Gyu HAN , Dae Young CHUNG , Taehyung KIM , Heejae LEE
CPC分类号： H10K50/13 , H10K50/16 , H10K71/15 , H10K2102/351
摘要： An electroluminescent device including a light emitting layer disposed between a first electrode and a second electrode, and an electron transport layer disposed between the multi-layered light emitting film and the second electrode, where the multi-layered light emitting film includes a first layer and a second layer disposed on the first layer, the first layer including a plurality of first semiconductor nanoparticles surrounded by a p-type organic semiconductor polymer, and the second layer including a plurality of second semiconductor nanoparticles
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公开(公告)号：US20220325178A1
公开(公告)日：2022-10-13
申请号：US17705617
申请日：2022-03-28
发明人： Heejae LEE , Soonmin CHA , Tae Hyung KIM , Dae-Hee LEE , Eun Joo JANG , Hyo Sook JANG , Dae Young CHUNG , Moon Gyu HAN
摘要： A quantum dot device and an electronic device. The quantum dot device includes a first electrode and a second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the second electrode and the light emitting layer and enhancing transport of first charge carriers from the second electrode to the light emitting layer, and a buffer layer disposed between the light emitting layer and the first charge auxiliary layer and enhancing extraction of second charge carriers from the light emitting layer.
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公开(公告)号：US20220310956A1
公开(公告)日：2022-09-29
申请号：US17495162
申请日：2021-10-06
发明人： Dae-Hee LEE , Yeonkyung LEE , Tae Hyung KIM , Heejae LEE , Eun Joo JANG , Dae Young CHUNG , Soonmin CHA
IPC分类号： H01L51/50
摘要： A quantum dot quantum dot device includes a first electrode and a second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, and a first hole auxiliary layer between the first electrode and the light emitting layer, wherein the first hole auxiliary layer includes a first hole auxiliary material and a second hole auxiliary material having a greater bandgap energy than a bandgap energy of the first hole auxiliary material, a difference between a HOMO energy level of the second hole auxiliary material and a HOMO energy level of the first hole auxiliary material is about 0.1 eV and less than about 0.8 eV, and a difference between a LUMO energy level of the second hole auxiliary material and a LUMO energy level of the first hole auxiliary material is greater than or equal to about 0.3 eV.
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