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8 March 2016 Blue resonant-cavity light-emitting diode with half milliwatt output power
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Abstract
GaN-based resonant-cavity light-emitting diode (RCLED) has a circular output beam with superior directionality than conventional LED and has power scalability by using two-dimensional-array layout. In this work, blue RCLEDs with a top reflector of approximately 50% reflectance were fabricated and characterized. An output power of more than 0.5 mW per diode was achieved before packaging under room-temperature continuous-wave (CW) operation. The full width at half maximum (FWHM) of the emission spectrum was approximately 3.5 and 4.5 nm for 10- and 20-μm-diameter devices, respectively. And the peak wavelength as well as the FWHM remained stable at various currents and temperatures.
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Pinghui S. Yeh, Chi-Chieh Chang, Yu-Ting Chen, Da-Wei Lin, Chun Chia Wu, Jhao Hang He, and Hao-Chung Kuo "Blue resonant-cavity light-emitting diode with half milliwatt output power", Proc. SPIE 9768, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XX, 97680P (8 March 2016); https://doi.org/10.1117/12.2211663
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