Near Infrared Shielding Properties of Quaternary Tungsten Bronze Nanoparticle Na0.11Cs0.22WO3

Thin film coatings on the windows ofautomobiles and buildings are used to filter out heat waveswhile retaining high transparency for visible light, thussignificantly increasing air conditioning efficiency in summerand heating efficiency in winter. A variety of thin filmcoating materials and technologies have been studied inacademia and industry including rare-earth hexaborides,