Aluminum Nitride Deep - ultraviolet Light - emitting
نویسندگان
چکیده
The shortest-wavelength color of light that is visible to the human eye is violet. As shown in Fig. 1, light with wavelengths shorter than 400 nm is called ultraviolet (UV) light: that from 300 to 400 nm is called near-UV light, that from 200 to 300 nm is called deep-UV light, and that shorter than 200 nm is called vacuum-UV light. Since vacuum-UV is absorbed by air, deep-UV light is the shortest wavelength that can be used in our living environment. The deep-UV light sources available at present are gas light sources, such as mercury lamps or gas lasers. These contain toxic substances, which cause serious environmental problems. Moreover, gas lasers require frequent supplies of gas and are large and inefficient. Therefore, replacing these gas light sources with semiconductor light-emitting devices, such as light-emitting diodes (LEDs) and laser diodes (LDs), would save space and greatly improve reliaYoshitaka Taniyasu†, Makoto Kasu, and Toshiki Makimoto
منابع مشابه
Recent progress and future prospects of AlGaN-based high-efficiency deep-ultraviolet light-emitting diodes
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