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[(a) and (b)] Cross-sectional schematic and electrically equivalent circuit of normal LED and SD-SL LED. Unlike the normal LED, -SD (like diode) is electrically reverse connected to the LED for the SD-SL LED. (c) Possible current injection path of the normal LED and (d) that of the SD-SL LED if the resistance of -SD is assumed to be much higher during the forward operation.
Current-voltage characteristics of Cr/Al Schottky contacts on .
Forward current-voltage characteristics of the normal LED and SD-SL LED. The inset shows the behavior at voltage ranges from 2.5 to 3.0 V.
Output power-current characteristics of the normal LED and SD-SL LED.
Plots at drop rate of output power in the normal LED and SD-SL LED. Dashed lines are theoretical results using Eq. (1).
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