Quaid-i-Azam University 1 article published in JoVE Engineering Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode Zhibin Wang1, Tai Cheng1, Fuzhi Wang1, Yiming Bai1, Xingming Bian1, Bing Zhang1, Tasawar Hayat2,3, Ahmed Alsaedi3, Zhan'ao Tan1 1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, 2Department of Mathematics, Quaid-I-Azam University, 3NAAM Research Group, Faculty of Science, King Abdulaziz University A protocol is presented for fabricating high-performance, pure blue ZnCdS/ZnS-based quantum dots light-emitting diodes by employing an autoxidized aluminum cathode.