Dual Luminescent Mn(II)-Doped Cu-In-Zn-S Quantum Dots as Temperature Sensors in Water.

ABSTRACT: CuInS₂ quantum dots have emerged in the last years as non-toxic alternative to traditional Pb and Cd based quantum dots, especially for biological applications. In this work, the hydrothermal synthesis of alloyed Cu-In-Zn-S quantum dots (CIZS) doped with manganese(II) is explored, with different metal ratios (Mn-CIZSy). The doped quantum dots show the sensitized emission of Mn²⁺ (approximately ms lifetime), together with the emission of the CIZS structure (approximately µs lifetime). The relative contribution of Mn²⁺ emission is highly dependent on the composition of the CIZS hosting structure (In:Cu ratio). In addition to that, it is shown that Mn²⁺ sensitization requires a threshold energy, which suggests the involvement of an intermediate stat

SUBMITTER: Bellatreccia C 

PROVIDER: S-EPMC11600701 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature