Electrochromic properties of Ni(V)Ox films deposited via reactive magnetron sputtering with a 8V-92Ni alloy target

Experimental results show that the sputtering erosion of the non-ferromagnetic Ni(V) target surface becomes controllable as opposed to the pure Ni target. The Ni(V)Ox film deposited at the working atmosphere of 1.33 Pa and oxygen flow ratio of 40% exhibits the highest optical transmission change (colored to bleached). The half device assembled with a 200 nm-thick film presents the shortest response time (3 s for coloring, 2 s for bleaching) and the greatest optical transmittance change in visible region (69.5% for bleached, 42.0% for colored). This study demonstrates that alloying 8 at.% V as a de-ferromagnetiser in Ni target does not observably affect the electrochromic properties of deposits.