The CaZnOS:Mn²⁺ (CZOSM) phosphor has been extensively studied for its excellent optical performance, with a typical red emission band peaking at about 580 nm ascribed to the ⁴T₁(⁴G)–⁶A₁(⁶S) transition of Mn²⁺. Herein the CZOSM phosphor was synthesized by a novel two-step method accompanied by control of the morphology of the precursor in the first step followed by sintering in the second step, which demonstrated improved emission intensity and uniform morphology simultaneously compared to those obtained by the traditional solid-state reaction route. Thus, uniform ZnS:Mn²⁺ particles could be obtained by a hydrothermal method, and then a Ca(OH)₂ shell was coated onto the ZnS:Mn²⁺ particles via a precipitation reaction. After that, these mixtures were sintered at the optimum temperature 800 °C in an argon atmosphere to prepare the CZOSM particles. Oleic acid (OA) was further used to transfer the hydrophilic CZOSM phosphors to hydrophobic ones. Finally, luminescent poly(dimethylsiloxane) (PDMS) films were fabricated by using the hydrophobic [email protected] powders, and their optical performance and flexibility were evaluated. Our results provide insight into the synthesis of hydrophobic phosphor particles used in luminescent PDMS films and help to unravel their potential application for flexible optical devices.

中文翻译：

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CaZnOS：Mn ²⁺荧光粉的两步合成和表面改性以及发光聚二甲基硅氧烷薄膜的制备

CaZnOS：Mn ²⁺（CZOSM）荧光粉因其出色的光学性能而被广泛研究，典型的红色发射带在约580 nm处出现峰，归因于⁴ T ₁（⁴ G）– ⁶ A ₁（⁶ S）跃迁Mn ²⁺。本文中，通过新颖的两步法合成CZOSM荧光粉，第一步是控制前体的形貌，第二步是烧结，与传统方法相比，它同时显示出改善的发射强度和均匀的形貌固态反应路线。因此，均匀的ZnS：Mn ²⁺可以通过水热法获得颗粒，然后通过沉淀反应将Ca（OH）₂壳涂覆在ZnS：Mn ²⁺颗粒上。之后，将这些混合物在氩气中的最佳温度800℃下烧结以制备CZOSM颗粒。还使用油酸（OA）将亲水性CZOSM磷光体转移为疏水性磷光体。最后，使用疏水性[受电子邮件保护的]粉末制备了发光聚二甲基硅氧烷（PDMS）薄膜，并对其光学性能和柔韧性进行了评估。我们的结果提供了对用于发光PDMS膜的疏水性磷光体颗粒合成的见解，并有助于阐明其在柔性光学设备中的潜在应用。