
Nano grain size yellow tungsten oxide may be applied for preparing window heat insulation film, and thus be used in glass window of building, which is also called “smart window”. It plays a role of heat insulation and energy saving. Also, it improves human comfort and saves energy charge of air conditioning in hot summer. There are two methods for applying yellow tungsten oxide in heat-insulating glass, which is mainly in accordance with its discoloration properties, that is, by electrochromic…