UV-emitting diode composed of transparent oxide semiconductors: p-SrCu2O2/n-ZnO
A UV-emitting diode composed of a hetero-SrCu2O2/ZnO pn junction was fabricated by pulsed laser deposition (PLD). On injecting an electrical current through a pn heterojunction of p-SrCu2O2/n-ZnO, an emission peak centred at 387 nm was observed, originating from excitons or the electron hole plasma in ZnO.