Type-I Heterostructure CdZnS/ZnS Core/Shell Quantum Dots Scintillators for Stable, High-Resolution, and Real-Time X-Ray Imaging.

ABSTRACT: Real-time X-ray imaging plays a critical role in medical diagnostics (e.g., cardiovascular and pulmonary monitoring), nondestructive evaluation, and in situ investigations of dynamic material processes. However, commonly used scintillators in medical imaging, CsI(Tl), suffer from an intrinsically long decay time (> 100 ms), which severely limits their suitability for high-temporal-resolution dynamic imaging. Herein, this study systematically employs surface defect passivation and carrier non-radiative recombination suppression strategies to successfully construct Cd_0.27Zn_0.73S/7 ML-ZnS core/shell quantum dots (QDs) with a type-I band alignment. Such QDs exhibit ultrahigh photoluminescence quantum yield of over 96%, ultrafast carrier recombination dynamics with a decay

SUBMITTER: Wang O 

PROVIDER: S-EPMC12752668 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature