The composite fine particle includes an inorganic fine particle having a light wavelength conversion ability, a continuous or discontinuous first coating layer formed on the whole or a part of a surface of the inorganic fine particle, a second coating layer formed on the first coating layer, and a third coating layer formed on the second coating layer, in which the second coating layer contains a multidentate organic ligand that is an organic compound having light absorption in a near-infrared or infrared range and has at least two or more coordination sites, and the first coating layer is a metal layer or an inorganic compound layer containing a coordination metal and a transition metal identical to or different from the coordination metal, and the third coating layer is a metal layer or an inorganic compound layer containing a coordination metal.

The present invention provides for a composition comprising an inorganic scintillator comprising an alkali metal hafnate, optionally cerium-doped, having the formula A.sub.2HfO.sub.3:Ce; wherein A is an alkali metal having a valence of 1, such as Li or Na; and the molar percent of cerium is 0% to 100%. The alkali metal hafnate are scintillators and produce a bright luminescence upon irradiation by a suitable radiation.

A luminophore having the empirical formula A.sub.3M*O.sub.xF.sub.9-2x:Mn.sup.4+ where A may be or include Li, Na, Rb, K, Cs, or combinations thereof. M* may be or include Cr, Mo, W, or combinations thereof. x may be or include 0<x<4.5.

Ligand-capped inorganic particles, films composed of the ligand-capped inorganic particles, and methods of patterning the films are provided. Also provided are electronic, photonic, and optoelectronic devices that incorporate the films. The ligands that are bound to the inorganic particles are composed of a cation/anion pair. The anion of the pair is bound to the surface of the particle and at least one of the anion and the cation is photosensitive.

A surface-modified phosphor includes: a phosphor matrix represented by Chemical Formula 1,

K.sub.2SiF.sub.6:Mn.sup.4+; and Chemical Formula 1

a nano-sized phosphor coated on the phosphor matrix.

The composite fine particle includes an inorganic fine particle having a light wavelength conversion ability, a continuous or discontinuous first coating layer formed on the whole or a part of a surface of the inorganic fine particle, a second coating layer formed on the first coating layer, and a third coating layer formed on the second coating layer, in which the second coating layer contains a multidentate organic ligand that is an organic compound having light absorption in a near-infrared or infrared range and has at least two or more coordination sites, and the first coating layer is a metal layer or an inorganic compound layer containing a coordination metal and a transition metal identical to or different from the coordination metal, and the third coating layer is a metal layer or an inorganic compound layer containing a coordination metal.

Provided is a stabilized zirconia sintered body which comprises a fluorescent agent containing zirconium and titanium, and shows fluorescence when irradiated with light including light of a wavelength of 250 nm to 380 nm.