![]() While these advancements afford a significant improvement over previous offerings, phosphor technologies have yet to deliver desirable white light with rich color rendering ability along with the energy efficiency typically attributed to LEDs.īlue LEDs excite red and green cadmium-free quantum dots, resulting in high-quality white light. But more recently, new phosphors and phosphor combinations (green-yellow plus red) have been developed to provide a higher quality of light. However, the light quality provided by this relatively simple solution was less than satisfactory, particularly in the red part of the visible spectrum. White LEDs initially employed the use of a blue LED combined with a single phosphor with broad yellow emission. The invention of blue LEDs and the subsequent rapid rate of development of new phosphor and down-converting technologies have enabled the phenomenal growth of all LEDs in general lighting applications. DiagNano™ InP/ZnS QDs exhibit high external quantum efficiency (EQE), the EQEs of red- (R-), green- (G-), and blue- (B-) QLEDs are higher than 15%, 10% and 1%, respectively.JAMES HARRIS AND DAVID WEBB, NANOCO TECHNOLOGIES LTD. InP/ZnS Electroluminescent Quantum Dots have been highlighted as the most promising alternatives to CdSe QDs because of their increasingly enhanced PL characteristics in terms of PL line width and PL QY, mainly enabled by an elaborate control of InP core size distribution and rational multi-shell-based hetero-structural engineering.Oleylamine InP/ZnS QDs (DNQ-M) are InP/ZnS core/shell quantum dots stabilized by oleyamine, with the emission peaks ranging from 530 nm to 650 nm, quantum yield > 10%.Octadecylamine and dodecanethiol InP/ZnS QDs are Octadecylamine and dodecanethiol functionalized InP/ZnS core/shell quantum dots, with the emission peaks ranging from 525 nm to 750 nm, quantum yield > 60%.Octadecylamine InP/ZnS QDs are core/shell fluorescent nanomaterials with indium phosphide as the core, zinc sulfide as the shell, stabilized with octadecylamine in toluene, with the emission peaks ranging from 480 nm to 700 nm, quantum yield ≥ 50%. ![]() Hydrophobic organic ligands InP/ZnS QDs are Hydrophobic organic ligands functionalized InP/ZnS core/shell quantum dots, with the emission peaks ranging from 530 nm to 650 nm, quantum yield > 40%.PEG-COOH InP/ZnS QDs are Carboxyl PEG functionalized InP/ZnS core/shell quantum dots, with the emission peaks ranging from 490 nm to 690 nm, quantum yield ≥ 50%. ![]()
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