[15p-S4_202-1~10] 9.2 Nanoparticles, Nanowires and Nanosheets

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[15p-S4_202-3] Effect of Chemical Species (NH₄⁺/NH₃) in Cavity of Hexagonal WO₃ on Structural Stability and Electrical and Optical Characteristic

〇(DC)Yuki Narita¹, Ryo Toyoshima¹, Ken Uchida¹ (1.Tokyo univ.)

Keywords:

oxide semiconductor,tungsten oxide

We clarified the effects of the difference of chemical species (NH₄⁺ or NH₃) in the cavities of hexagonal WO₃ on structural stability and electrical and optical properties. The phonon dispersion calculations showed that the hexagonal structure can stably exist in both cases. The electron density and electron energy loss spectroscopy calculations confirmed the electron doping to WO₃ and the increased infrared absorption intensity only in the presence of NH₄⁺. All these results were consistent with experimental results.