Introduction
To ensure the improvements of the electrical and optical properties of step-stage LEDs, a dual-stage LED is also fabricated for comparison.
Experiments
1µm-thick Buffer layer
n- contact
p- contact
EBL
p- GaN
1µm-thickn-GaN
Sapphire
Fig. Illustration of TMIn flow rate for controlling the indium compositionduring the growth of dual-stage and step-stage MQW structure.
wwMQW
Chip size:1.61 mm2
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