Crystallization behavior and optical regulation in Eu@CdS QD glass

In this paper, the crystallization kinetics of the sample were systematically investigated, ultimately leading to the successful precipitation of CdS QDs within the borosilicate glass matrix through meticulously designed thermal processing protocols and compositional optimization. Structural and morphological analyses confirmed the in-situ precipitation of crystals with an average diameter of approximately 10 nm embedded in the glass matrix. Notably, the glass sample exhibited a remarkably broad emission band spanning the entire visible spectrum when excited at 396 nm. Additionally, incorporating Eu 3+ into the glass matrix and subjecting it to heat treatment at 500°C resulted in a significant enhancement of photoluminescence intensity and an improved quantum yield. Furthermore, integrating Eu 3+ -co-doped CdS QD glass with a 395 nm blue LED chip produced yellow light emission. This emission demonstrated a color purity of up to 97% and a correlated color temperature of 3402 K. These findings strongly indicate the potential application of Eu@CdS QD glass in micro-LED lighting technologies.