AlGaN-Based Deep-UV LED with Novel Transparent Electrodes and Integrated Array Device for Efficient Disinfection
The COVID-19 pandemic since 2019 has brought huge impacts and economic losses to the world.AlGaN-based deep-ultraviolet light emitting diode(DUV-LED)as a new and efficient sterilization device has attracted broad research attentions.The transparent electrode covering deep-UV band plays an important role in improving the performance of deep-UV LEDs.Here,we propose a novel core-shell structure Cu@metal nanosilks(Cu@metal NSs)network electrode with high transparency(>90%)to enhance the output power of deep-UV LED.In addition,based on the optimized design of integrated array module of deep-UV LEDs,a 180 mW DUV-LED sterilization device is fabricated.The device shows high inactivation performance for Escherichia coli and Staphylococcus aureus(>99.99%)and for COVID-19 virus(>99.9%).This work provides a novel method for improving the performance of deep-UV LEDs and pushing forward the efficient sterilization applications.