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Efficient white LEDs using liquid-state magic-sized CdSe quantum dots

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Abkenar, Sirous Khabbaz
Ow-Yang, Cleva W.

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Magic clusters have attracted significant interest to explore the dynamics of quantum dot (QD) nucleation and growth. At the same time, CdSe magic-sized QDs reveal broadband emission in the visible wavelength region, which advantageously offer simple integration of a single-type of nanomaterial and high color rendering ability for white light-emitting diodes (LEDs). Here, we optimized the quantum yield of magic-sized CdSe QDs up to 22% via controlling the synthesis parameters without any shelling or post-treatment process and integrated them in liquid-state on blue LED to prevent the efficiency drop due to host-material effect. The fabricated white LEDs showed color-rendering index and luminous efficiency up to 89 and 11.7 lm/W, respectively.

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Nature Publishing Group (NPG)

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Science and technology

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Scientific Reports

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10.1038/s41598-019-46581-2

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