A CuO Nanowire‐Based Alternating Current Oxide Powder Electroluminescent Device with High Stability

Abstract An AC‐driven powder electroluminescent (EL) device has been achieved by constructing a CuO nanowire–Zn 2 GeO 4 :Mn phosphor heterogeneous junction. The CuO nanowires enhance the local electric field, resulting in electroluminescence of an oxide‐based phosphor in EL devices owing to field injection at the nanowire tips. The CuO nanowire array was synthesized by an in situ thermal oxidation method at 400 °C in air and employed as an …