4 papers
High Proton Conductivity of HxWO3 at Intermediate Temperatures: Unlocking Its Application as a Mixed Ionic-Electronic Conductor
Rantaro Matsuo, Tomoyuki Yamasaki, Takahisa Omata
Hydrogen tungsten bronzes (HxWO3), known for their mixed protonic-electronic conduction near room temperature, are extensively studied for electrochromic and gasochromic applicatio…
Non-stoichiometry in SnS: How it affects thin-film morphology and electrical properties
Taichi Nogami, Issei Suzuki, Daiki Motai +3
Tin sulfide (SnS) has garnered much attention as a promising material for various applications, including solar cells and thermoelectric devices, owing to its favorable optical and…
Reactive sputtering of SnS thin films using sulfur plasma and a metallic tin target: achieving stoichiometry and large grains
Daiki Motai, Issei Suzuki, Taichi Nogami +1
This study presents a novel method for fabricating stoichiometric SnS thin films with large grain sizes via reactive sputtering using a metallic Sn target and sulfur plasma (S-plas…
Unconventional and Powerful Ion Sources for Solid-State Ion Exchange, Cu2SO4 and Cu3PO4: Exemplified by Synthesis of Metastable β-CuGaO2 from Stable β-LiGaO2
Issei Suzuki, Kako Washizu, Daiki Motai +2
This study introduces a new method for synthesizing Cu+-containing metastable phases through ion exchange. Traditionally, CuCl has been used as a Cu+ ion source for solid-state ion…