公开(公告)号：US20230037132A1

公开(公告)日：2023-02-02

申请号：US17864124

申请日：2022-07-13

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong JANG ,  Gumin KANG ,  Hyungduk KO ,  Seung Yong LEE ,  Kwang Rok MUN

IPC: C09K11/77 ,  C09K11/02 ,  G01N21/64

Abstract: Provided are a core-multishell upconversion nanophosphor capable of being excited by 800±20 nm, 980±20 nm, and 1530±20 nm near-infrared (NIR) light to emit various colors including green, red, blue, and combinations thereof, and a transparent polymer composite including the upconversion nanophosphor. A crystalline shell may be formed between the red, green, and blue emission layers to enable emission of pure red, green, or blue light, and be further formed on an outermost surface to provide a color-tunable and high-brightness upconversion nanophosphor.