15 March 2018 Phosphor-free III-nitride nanowire white-light-emitting diodes for visible light communication
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Abstract
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, Thang Ha Quoc Bui, Mehrdad Djavid, Md Nasiruddin Bhuyian, Phuoc Vu, 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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