公开(公告)号：US11066598B2

公开(公告)日：2021-07-20

申请号：US16293960

申请日：2019-03-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong Jang ,  Joon Soo Han ,  A Ra Hong ,  So Hye Cho ,  Seung Yong Lee ,  Hyung Duk Ko

IPC: C09K11/06 ,  C09K11/77 ,  G06Q30/00

Abstract: Provided is a dye-sensitized upconversion nanophosphor including a core, a first shell surrounding at least part of the core, and an organic dye bonded to a surface of the nanophosphor which has an absorption band ranging from 650 nm to 850 nm and which is excited in a near-infrared region to emit visible light. The dye-sensitized upconversion nanophosphor may be included in a display apparatus, a fluorescent contrast agent, or an anti-counterfeiting code. The organic dye may be an IR-808 dye.