Emerging Inkjet-Compatible Anti-Counterfeiting Inks Based on Microfluidic-Synthesized NIR PbS/CdS Quantum Dots.

ABSTRACT: The lead sulfide (PbS) quantum dot (QD) material has excellent near-infrared (NIR) emissions. It is possible to synthesize core-shell-structured PbS/CdS QDs using the cation exchange method (Pb²⁺ → Cd²⁺), which enhances mass transfer and reaction uniformity and increases their stability. However, the large-scale synthesis of core-shell PbS/CdS QDs is needed to fulfill the industrial needs. Here, we used a microfluidic device to synthesize PbS and PbS/CdS QDs in enabling accurate control of flow rates, mixing, temperature, and residence time, which are critical for achieving uniform nucleation and controlled growth of QDs. This results in highly monodisperse nanocrystals with consistent optical properties. PbS QDs could be tuned by wavelengths from 1200 to 1600 nm and

SUBMITTER: Muchlis AMG 

PROVIDER: S-EPMC12569701 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature