| abstract |
Disclosed are a near-infrared shielding material fine particle dispersion in which composite tungsten oxide fine particles having improved coloring power are dispersed in a medium, a near-infrared shielding material, and a method for producing a near-infrared shielding material fine particle dispersion. A near-infrared shielding material fine particle dispersion in which near-infrared shielding material fine particles are dispersed in a medium, wherein the near-infrared shielding material fine particles have a general formula LixMyWOz (where M is Cs, Rb , K, Na, Ba, Ca, Sr, Mg, one or more elements, W is tungsten, O is oxygen, 0.1 ≦ x <1.0, 0.1 ≦ y ≦ 0. 5, fine particles B of composite tungsten oxide represented by 2.2 ≦ z ≦ 3.0), The near-infrared shielding material fine particle dispersion, wherein the composite tungsten oxide B fine particles are fine particles having a hexagonal crystal structure, and the near-infrared shielding material fine particles have a particle diameter of 1 nm to 500 nm. Is used. [Selection figure] None |