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We show that the performance of InGaN/GaN axial nanowire LEDs is largely limited by the poor carrier injection efficiency. We have further demonstrated high performance phosphor-free white LEDs using InGaN/GaN/AlGaN dot-in-a-wire core-shell heterostructures.
We report on the achievement of InGaN/GaN dot-in-a-wire phosphor-free white light-emitting diodes, which can exhibit a record internal quantum efficiency of ∼57% and virtually zero efficiency droop for injection currents up to ∼2,200 A/cm2.
We report on the achievement of a record high internal quantum efficiency in InGaN/GaN dot-in-a-wire light emitting diodes by significantly reducing the electron overflow and enhancing the hole transport in the device active regions.
In this article, Gallium nitride (GaN) cantilevers integrated with AlGaN/GaN high electron mobility transistors (HEMTs) are fabricated with a GaN-on-silicon platform, which is fully compatible with the standard HEMTs fabrication process. A type of micro-bending test was used to characterize the piezoresponse of AlGaN/GaN HEMT on the GaN cantilever. The modulation capability of the AlGaN/GaN heterostructures...
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