公开(公告)号：US20200165517A1

公开(公告)日：2020-05-28

申请号：US16691889

申请日：2019-11-22

Applicant: Samsung Display Co., Ltd.

Inventor： Jongmin LEE ,  Young Seok PARK ,  Taek hoon KIM ,  Shin Ae JUN ,  Jin A KIM

IPC: C09K11/88 ,  C09K11/02 ,  H01L51/50 ,  H01L33/06 ,  H01L31/0352

Abstract: A quantum dot including a seed including a first semiconductor nanocrystal including a first Group II-VI compound, a quantum well surrounding the seed, the quantum well including a second semiconductor nanocrystal including a Group IIIA metal except aluminum and a Group V element, and a shell disposed on the quantum well, the shell including a third semiconductor nanocrystal including a second Group II-VI compound, wherein the quantum dot does not include cadmium, an energy bandgap of the second semiconductor nanocrystal is smaller than an energy bandgap of the first semiconductor nanocrystal and an energy bandgap of the third semiconductor nanocrystal, and an ultraviolet-visible (UV-Vis) absorption spectrum curve of the quantum dot does not have an inflection point within a wavelength range of about 450 nanometers (nm) to about 600 nm, and a quantum dot composite and a device including the same.