Strategies to host silver quantum clusters in borosilicate glass: How to mutually fulfill PL efficiency and chemical stability?

Q1 Physics and Astronomy

Journal of Non-Crystalline Solids: X Pub Date : 2022-12-01 DOI:10.1016/j.nocx.2022.100132

Tian Hu , Wenyan Zheng , Zhiyu Liu , Jiannan Jia , Xiuxia Xu , Qiang Xu , Xvsheng Qiao , Xianping Fan

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引用次数: 1

Abstract

Silver quantum clusters (Ag QCs), with broadband molecular luminescence, are stabilized in the borosilicate glasses with the [SiO₄]/[BO₄]⁻/[BO₃] blended networks. The introduction of SiO₂ in the B₂O₃-Ag₂O-BaO glasses induces the transformation of [BO₃] to [BO₄]⁻ to prevent over-growth of Ag QCs → Ag NPs and uniformly disperse Ag QCs in glass matrix. Due to the uniformly distribution of Ag QCs, the photoluminescence (PL) quenching due to cross relaxation (CR) between Ag QCs is highly suppressed, achieving PL quantum yields (QYs) as high as 67.38%. The Ag QCs activated glass based WLEDs exhibit not only excellent chemical durability but also superior luminance performances with a color coordinate of (0.32, 0.37), a correlated color temperature (CCT) of 6030 K and a color rendering index (CRI) of 89.7. Thus, the Ag QCs activated borosilicate glasses can be considered as a new type of efficient luminescent materials for various photonic application.

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硼硅玻璃中承载银量子团簇的策略:如何相互实现PL效率和化学稳定性?

采用[SiO4]/[BO4]−/[BO3]混合网络在硼硅酸盐玻璃中稳定了具有宽带分子发光的银量子团簇(Ag qc)。在b2o3 - ag20 - bao玻璃中引入SiO2，诱导[BO3]向[BO4] -转变，防止Ag qc→Ag NPs过度生长，使Ag qc均匀分散在玻璃基体中。由于Ag qc的均匀分布，Ag qc之间的交叉弛豫(CR)引起的光致发光(PL)猝灭被高度抑制，PL量子产率(QYs)高达67.38%。Ag qc活性玻璃基wled不仅具有优异的化学耐久性，而且具有优异的亮度性能，其色坐标为(0.32,0.37)，相关色温(CCT)为6030 K，显色指数(CRI)为89.7。因此，Ag QCs活化的硼硅酸盐玻璃可以被认为是一种新型的高效发光材料，可用于各种光子应用。

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