公开(公告)号：US20210269715A1

公开(公告)日：2021-09-02

申请号：US17186434

申请日：2021-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Eun Joo JANG ,  Sungwoo HWANG

IPC: C09K11/88 ,  C09K11/02 ,  H01L27/32 ,  H01L51/50

Abstract: A quantum dot including a core and a shell disposed on an outer surface of the core. The core includes a first semiconductor nanocrystal including a Group II-VI compound. The shell includes a second semiconductor nanocrystal. An effective mass of the second semiconductor nanocrystal is about 0.5 times to about 2.0 times an effective mass of the first semiconductor nanocrystal and the quantum dot does not include cadmium, lead, mercury, or a combination thereof.

公开(公告)号：US20200172806A1

公开(公告)日：2020-06-04

申请号：US16507406

申请日：2019-07-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Garam PARK ,  Tae Gon KIM ,  Jooyeon AHN ,  Ji-Yeong KIM ,  Nayoun WON ,  Shin Ae JUN

IPC: C09K11/88 ,  C09K11/02 ,  H01L27/32 ,  G02F1/1335

Abstract: Disclosed are a quantum dot and a quantum dot-polymer composite and a device including the same, wherein the quantum dot includes a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dot does not include cadmium, wherein in the quantum dot, a mole ratio of sulfur with respect to selenium is less than or equal to about 2.5:1.