公开(公告)号：US20190211261A1

公开(公告)日：2019-07-11

申请号：US16245728

申请日：2019-01-11

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Hyo Sook JANG ,  Yuho WON ,  Sungwoo HWANG ,  Ji Yeong KIM ,  Eun Joo JANG

IPC分类号： C09K11/08 ,  C08L57/10 ,  G02F1/1335 ,  H01L51/50 ,  H01L27/32

摘要： A cadmium free quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core, wherein the quantum dot does not include cadmium and includes indium and zinc, the quantum dot has a maximum photoluminescence peak in a red light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than or equal to about 40 nanometers (nm), an ultraviolet-visible (UV-Vis) absorption spectrum of the quantum dot includes a valley between about 450 nm to a center wavelength of a first absorption peak, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.2, a quantum dot polymer composite including the same, and a display device including the quantum dot-polymer composite: (Absfirst−Absvalley)/Absfirst=VD.

公开(公告)号：US20200216755A1

公开(公告)日：2020-07-09

申请号：US16817902

申请日：2020-03-13

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Hyo Sook JANG ,  Yuho WON ,  Sungwoo HWANG ,  Ji Yeong KIM ,  Eun Joo JANG

IPC分类号： C09K11/08 ,  C09D133/02 ,  C08F220/06 ,  C09D133/00 ,  H01L27/32 ,  H01L51/50 ,  G02F1/13357 ,  C08L57/10

摘要： A cadmium free quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core, wherein the quantum dot does not include cadmium and includes indium and zinc, the quantum dot has a maximum photoluminescence peak in a red light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than or equal to about 40 nanometers (nm), an ultraviolet-visible (UV-Vis) absorption spectrum of the quantum dot includes a valley between about 450 nm to a center wavelength of a first absorption peak, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.2, a quantum dot polymer composite including the same, and a display device including the quantum dot-polymer composite: (Absfirst−Absvalley)/Absfirst=VD.

公开(公告)号：US20220243125A1

公开(公告)日：2022-08-04

申请号：US17726702

申请日：2022-04-22

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Hyo Sook JANG ,  Yuho WON ,  Sungwoo HWANG ,  Ji Yeong KIM ,  Eun Joo JANG

IPC分类号： C09K11/08 ,  C08L57/10 ,  G02F1/13357 ,  H01L51/50 ,  H01L27/32 ,  C09D133/00 ,  C08F220/06 ,  C09D133/02

摘要： A cadmium free quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core, wherein the quantum dot does not include cadmium and includes indium and zinc, the quantum dot has a maximum photoluminescence peak in a red light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than or equal to about 40 nanometers (nm), an ultraviolet-visible (UV-Vis) absorption spectrum of the quantum dot includes a valley between about 450 nm to a center wavelength of a first absorption peak, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.2, a quantum dot polymer composite including the same, and a display device including the quantum dot-polymer composite: (Absfirst−Absvalley)/Absfirst=VD.

公开(公告)号：US20210222061A1

公开(公告)日：2021-07-22

申请号：US17226154

申请日：2021-04-09

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Hyo Sook JANG ,  Yuho WON ,  Sungwoo HWANG ,  Ji Yeong KIM ,  Eun Joo JANG

IPC分类号： C09K11/08 ,  C08L57/10 ,  G02F1/13357 ,  H01L51/50 ,  H01L27/32 ,  C09D133/00 ,  C08F220/06 ,  C09D133/02

摘要： A cadmium free quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core, wherein the quantum dot does not include cadmium and includes indium and zinc, the quantum dot has a maximum photoluminescence peak in a red light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than or equal to about 40 nanometers (nm), an ultraviolet-visible (UV-Vis) absorption spectrum of the quantum dot includes a valley between about 450 nm to a center wavelength of a first absorption peak, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.2, a quantum dot polymer composite including the same, and a display device including the quantum dot-polymer composite: (Absfirst−Absvalley)/Absfirst=VD.