Figure 5.

The optical power of the electroluminescence emission of a light emitting diode that was grown on the patterned sapphire substrate with or without micro- and nanoscale complex structures: (a) with respect to wavelength at 20 mA, (b) with respect to current, and (c) with a 60° tilt.

Cho et al. Nanoscale Research Letters 2011 6:578   doi:10.1186/1556-276X-6-578
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