Fabrication of thermochromic SmNiO₃ film deposited by spin-coating method from aqueous solution

Abstract

SmNiO₃ (SNO) films were fabricated on quartz substrates by a spin coating method using Sm–Ni based aqueous solution. SNO film annealed at 700°C showed low crystallinity, while film annealed at 800°C showed high crystallinity. The transmittance of these films did not vary above or below the transition temperature of SNO. SNO films were also fabricated on an SNO seeding layer, with crystalline SNO film obtained at an annealing temperature of 700°C. The transmittance of the resulting film changed above and below the transition temperature of SNO.