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Deep UV light has potential and previously been used for deactivating various microorganisms and has shown its germicidal effects. III-Nitride quantum-well based deep UV-LEDs can be used effectively in deactivating pathogens. Several researchers have reported that the deep UV-LEDs are useful in deactivating viruses. However, the data published in the literature seem to be insufficient and inconsistent, thus, necessitating further studies for the use of deep UV-LED to combat COVID virus. This article, therefore, reviews the LED-structure and materials for producing UV-wavelengths for applications in deactivating Coronavirus (SARS-CoV-2). This incorporates the design and simulation-based Nano- Engineered III-Nitride quantum well deep-UV LEDs that will deliver the required wavelength. The design is based on AlGaN/AlN Multiple Quantum wells (MQWs) for deep-UV LEDs capable of producing the wavelength 250 nm < λ ˂ 300 nm. Material combinations and the device-structures aim to achieve the desired wavelengths, spectral and optical power attributes required to deactivate coronavirus. It utilizes nano-bandgap engineering techniques comprising various Al/Ga compositions and AlN epi-layers, and superlattice structures. Using the appropriate number of quantum wells in the device design will achieve the desired wavelengths and power levels.
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