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(Color online) (a) Schematic device structure with cross-section view, (b) the top-view graph of the LEDs with periodic texture on the GZO TCL, and (c) the enlarged top-view graph of etched GZO surface. The chip size is .
Typical current-voltage-light output power characteristics of the LEDs with different TCLs. The right vertical axis and the top horizontal axis show light output power as a function of injection current. The left vertical axis and the bottom horizontal axis show the characteristics.
Forward voltage, light output power, and wall-plug efficiency when the LEDs were driven at dc current of .
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