	US 12,139,653 B2
	Metal halide colloidal nanoparticles and method for producing the same
Tae Jong Paik, Seoul (KR); and Min Ji Lee, Seoul (KR)
Assigned to CHUNG ANG UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION, Seoul (KR)
Filed by CHUNG ANG UNIVERSITY ACADEMIC COOPERATION FOUNDATION, Seoul (KR)
Filed on Jan. 13, 2022, as Appl. No. 17/574,717.
Claims priority of application No. 10-2021-0004666 (KR), filed on Jan. 13, 2021; and application No. 10-2022-0004884 (KR), filed on Jan. 12, 2022.
Prior Publication US 2022/0220378 A1, Jul. 14, 2022
Int. Cl. C09K 11/77 (2006.01); C01F 17/36 (2020.01); C09K 11/02 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01)

CPC C09K 11/7705 (2013.01) [C01F 17/36 (2020.01); C09K 11/025 (2013.01); C09K 11/772 (2013.01); C09K 11/7733 (2013.01); C09K 11/7748 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); C01P 2004/64 (2013.01)]

16 Claims

1. Metal halide colloidal nanoparticles represented by the following Chemical Formula 1:

A₃MX₆ [Chemical Formula 1]

wherein in the Chemical Formula 1, A is an alkali metal element, M is a rare-earth metal element, and X is a halogen element,

wherein the metal halide colloidal nanoparticles absorb an excitation wavelength in a range of 250 to 320 nm and thus emit light in a light-emission spectrum of 500 to 570 nm or 580 to 630 nm, and

wherein the metal halide colloidal nanoparticles absorb an excitation wavelength in a range of 320 to 450 nm and thus emit light in a light-emission spectrum of 380 to 480 nm.