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

An AC-driven powder electroluminescent (EL) device has been achieved by constructing a CuO nanowire-Zn₂ GeO₄ :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 electric field …