15 March 2018 Phosphor-free III-nitride nanowire white-light-emitting diodes for visible light communication
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Phosphor-free InGaN/AlGaN core-shell nanowire light-emitting diodes (LEDs) grown by molecular beam epitaxy have been developed and their application in visible light communication (VLC) has been investigated. The electroluminescence spectra of these nanowire LEDs show a very broad spectral linewidth and fully covers the entire visible spectrum. High-brightness phosphor-free LEDs with highly stable white-light emission and high color-rendering index (CRI) of >98 were obtained by controlling the Indium composition in the device active region. Moreover, the phosphor-free nanowire white-LEDs exhibit relatively high 3-dB frequency bandwidth of ~ 1.4 MHz which is higher compared to that of phosphor-based white LEDs at the same measurement condition. Such high-performance phosphorfree nanowire LEDs are being further improved and are ideally suited for future smart lighting applications and communications.
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Moab Rajan Philip, Moab Rajan Philip, Thang Ha Quoc Bui, Thang Ha Quoc Bui, Mehrdad Djavid, Mehrdad Djavid, Md Nasiruddin Bhuyian, Md Nasiruddin Bhuyian, Phuoc Vu, Phuoc Vu, Hieu Pham Trung Nguyen, Hieu Pham Trung Nguyen, } "Phosphor-free III-nitride nanowire white-light-emitting diodes for visible light communication", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105953I (15 March 2018); doi: 10.1117/12.2303543; https://doi.org/10.1117/12.2303543

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