Quantum Dot (QD) Pigments: Structure, Properties, and Applications
We produce state-of-the-art QD pigments—innovative nanoscale light-emitting materials that harness quantum confinement effects for exceptional optical, electronic and color properties.
Technical Properties
Semiconductor nanocrystals made from materials such as Graphene QDs, CdSe, InP, ZnS, and perovskites.
Smaller QDs have larger bandgaps (emitting blue), while larger QDs have smaller bandgaps (emitting red), covering the full visible spectrum with narrow, pure colors.
Use of inorganic shells (e.g., ZnS) or organic ligands to stabilize the pigments and enhance quantum yield (often >90%).
Products and Applications
QD pigments are transforming display technologies—enhancing color purity, brightness, and energy efficiency in QD-enhanced LCDs and OLEDs. They also find applications in high-security anti-counterfeiting inks, and in paints and coatings, where they offer superior durability, resistance to photobleaching, and enhanced chromaticity. Ongoing research addresses toxicity concerns (especially from Cd-based QDs) by developing heavy-metal-free alternatives such as InP/ZnS and carbon-based QDs.
