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Quantum Dots Deep Into Hybrid LEDs

Boasting record-breaking color conversion effective quantum yields, an international team of researchers has designed a novel photonic quasi-crystal LED structure that deeply embeds quantum dots within the whole stack of the LED's active layers. The researchers first grew a LED stack of GaN/InGaN Multi-Quantum Well (MQW) onto a sapphire substrate, and then used nano-imprint lithography and plasma etching to "punch" the whole stack and structure it as a 12-fold symmetric quasi-crystal (PQC).

1 comment:

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