CsPbBr₃ perovskite QDs are precipitated in a borosilicate glass matrix, while protects efficiently the QD from photo-induced and chemical degradation. We show that the CsPbBr₃ QD doped glasses exhibit strong visible photoluminescence (PL), which is dependence on the concentration that can be controlled by heat treatment conditions. Due to the stabilization by the glass matrix, we are able to determine the nonlinear optical (NLO) properties with a Z-scan technique. We observe a cross-over from saturated absorption (SA) to reverse saturated absorption (RSA) by either increase the pumping intensity or the QD size, reminiscent of quantum size effect in the NLO response. The RSA is associated with two-photon absorption (TPA) that induces strong upconversion luminescence of QD doped glass samples. Our results imply that the glasses containing CsPbBr₃ QDs may find potential applications from solid state lighting to ultrafast optical switches.

CsPbBr ₃钙钛矿量子点沉淀在硼硅酸盐玻璃基质中，同时有效保护量子点免受光诱导和化学降解。我们证明了CsPbBr ₃掺杂QD的玻璃表现出很强的可见光致发光（PL），这取决于可以通过热处理条件控制的浓度。由于玻璃基质的稳定作用，我们能够使用Z扫描技术确定非线性光学（NLO）特性。我们观察到通过增加泵浦强度或QD大小从饱和吸收（SA）到反向饱和吸收（RSA）的交叉，让人联想到NLO响应中的量子尺寸效应。RSA与双光子吸收（TPA）相关，该光子吸收引起QD掺杂玻璃样品的强上转换发光。我们的结果表明，包含CsPbBr ₃ QD的眼镜可能会发现从固态照明到超快光学开关的潜在应用。