Tailored large-particle quantum dots with high color purity for efficient QLEDs (IMAGE)

Science China Press

Tailored large-particle quantum dots with high color purity for efficient QLEDs

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Precisely tailored Zn1−xCdxSe/ZnSe shells with a continuous gradient structure were synthesized using the facile high-temperature successive ion layer adsorption and reaction (HT-SILAR) strategy. This process enables the formation of large-particle alloyed red CdZnSe/Zn1−xCdxSe/ZnSe/ZnS/CdZnS QDs. The obtained QDs exhibit an ultra-narrow FWHM of 17.1 nm and a near-unity PLQY, resulting in a record EQE of 38.2% and an exceptional T95 lifetime of over 21,000 hours (tested at 1000 cd m–2) for red QLEDs.

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