| abstract |
A first object of the present invention is to provide a thermochromic material having high thermochromic properties against infrared rays and high transparency in a visible light region, and a thermochromic film and a thermochromic film using the thermochromic material. It is a second object to provide a chromic glass. (Structure) An inorganic fine particle carrying vanadium dioxide or vanadium dioxide in which a part of vanadium atoms of vanadium dioxide is replaced by at least one atom selected from tungsten, molybdenum, niobium, and tantalum ( Thermochromic material) has been found to have high thermochromic properties against infrared rays, and have completed the present invention. In addition, they have found that a film containing a thermochromic material has high thermochromic properties against infrared rays and high transparency in a visible light region, and has completed the present invention. [Selection diagram] None |