| abstract |
There is provided a near-infrared shielding ultrafine particle dispersion body which has transparency in a visible light region, which has good near-infrared shielding properties, in which a blue haze phenomenon is suppressed, and which can be produced with high productivity, namely there is provided a near-infrared shielding ultrafine particle dispersion body in which ultrafine particles having near-infrared shielding properties are dispersed in a solid medium, wherein the ultrafine particles are composite tungsten oxide ultrafine particles, and a value of an XRD peak top intensity ratio of the composite tungsten oxide ultrafine particles is 0.13 or more when a value of the XRD peak intensity is set to 1, with plane (220) of a silicon powder standard sample (640c produced by NIST) as a reference. |