公开(公告)号：US20190276736A1

公开(公告)日：2019-09-12

申请号：US16293641

申请日：2019-03-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Won-Kook CHOI ,  Hong Hee KIM ,  Yeonju LEE

IPC: C09K11/65 ,  C09K11/54

Abstract: Disclosed is a zinc oxide-based quantum dot aggregate capable of emitting white light is a mixture of a zinc oxide quantum dot and a zinc oxide-graphene quantum dot, in which the zinc oxide quantum dot emits yellow light when being irradiated with an excitation wavelength shorter than a wavelength corresponding to an energy band gap of the zinc oxide quantum dot, the zinc oxide-graphene quantum dot is in a form in which a zinc oxide quantum dot is bound with graphene via a Zn—O—C bond and emits blue-based light, and white light emission is possible through color rendering of yellow light emission by the zinc oxide quantum dot and blue-based light emission by the zinc oxide-graphene quantum dot.

公开(公告)号：US20230363194A1

公开(公告)日：2023-11-09

申请号：US18311454

申请日：2023-05-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Won-Kook CHOI ,  Hong Hee KIM ,  Yong-Won SONG ,  Soohyung PARK

IPC: H10K50/115 ,  H10K85/30

CPC classification number: H10K50/115 ,  H10K85/381 ,  B82Y20/00

Abstract: Disclosed is a light emitting diode using zinc oxide-aminopyrene core-shell quantum dots capable of improving the purity of blue light emission and securing long lifetime through the characteristic that emission transition of electrons proceeds in aminopyrene by applying the zinc oxide-aminopyrene quantum dots forming a core-shell structure with zinc oxide(ZnO) and 1-aminopyrene to the light emitting diode. The light emitting diode using the zinc oxide-aminopyrene core-shell quantum dots comprises a bule light-emitting layer of the ZnO@1-aminopyrene quantum dots having a core-shell structure in which ZnO quantum dots form a core, and 1-aminopyrene forms a shell.