Mechanoluminescence (ML) materials featuring photon emission under mechanical stimulation have attracted the attention of scientists doing researches on structure monitoring, stress sensing, anti-counterfeiting and imaging. In this study, a novel series of ML green phosphors SrGaGeO: Tb (0 ≤ ≤ 0.05) have been synthesized by a high-temperature solid-state method for the first time. Their crystal structure, optical properties and attenuation profiles have been investigated. X-ray diffraction (XRD) analysis reveals that the sample is tetragonal with a space group of 2, and Tb partially replaces the lattice position of Sr in the SrGaGeO crystals. The green ML emission mechanism is attributable to the typical D → F transition of Tb ions, similar to persistent luminescence (LPL) and the photoluminescence (PL). To better understand the mechanism of potential LPL and ML in this system, the trap regulation is comprehensively investigated by a series of thermoluminescence (TL) measurements.

中文翻译：

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开发具有机械发光和长余辉特性的 Sr2Ga2GeO7: Tb3+ 绿色荧光粉的一条有前途的路线

具有在机械刺激下发射光子的机械发光（ML）材料引起了从事结构监测、应力传感、防伪和成像研究的科学家的关注。在这项研究中，首次采用高温固相方法合成了一系列新型ML绿色荧光粉SrGaGeO：Tb（0≤≤0.05）。对其晶体结构、光学性质和衰减曲线进行了研究。 X射线衍射（XRD）分析表明，样品呈四方晶系，空间群为2，Tb部分取代了SrGaGeO晶体中Sr的晶格位置。绿色ML发射机制可归因于Tb离子的典型D→F跃迁，类似于持久发光（LPL）和光致发光（PL）。为了更好地理解该系统中潜在 LPL 和 ML 的机制，通过一系列热释光 (TL) 测量全面研究了陷阱调节。