Lighting up metal nanoclusters by the H₂O-dictated electron relaxation dynamics.

ABSTRACT: The modulation of traps has found attractive attention to optimize the performance of luminescent materials, while the understanding of trap-involved photoluminescence management of metal nanoclusters greatly lags behind, thus extensively impeding their increasing acceptance as the promising chromophores. Here, we report an efficient passivation of the structural oxygen vacancies in AuAg nanoclusters by leveraging the H₂O molecules, achieving a sensitive color tuning from 536 to 480 nm and remarkably boosting photoluminescence quantum yield from 5.3% (trap-state emission) to 91.6% (native-state emission). In detail, favored electron transfer relevant to the structural oxygen vacancies of AuAg nanoclusters contributes to the weak trap-state emission, which is capable of being res

SUBMITTER: Zhong Y 

PROVIDER: S-EPMC11889173 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature