Piezoelectric mechanoluminescent materials capable of directly converting external mechanical stimulation into light are decisive for the development of optoelectronic sensing devices. However, emission spectral modulation is highly demanded for mechanoluminescent materials, which is important for applications. Here, we have doped luminescent ions into the piezoelectric semiconductor oxysulfide compounds (Sr,Ba)ZnOS using the salt-fusion method to form multi-mode emission materials. The prepared luminescent compounds can simultaneously generate photoluminescence and mechanoluminescence for temperature and stress sensing. The tunable photoluminescence can be obtained for multi-color emissions by controlling concentrations of luminescent ions Mn and Er. Subsequently, the materials are combined with polydimethylsiloxane matrix to prepare smart mechanoluminescence films for optical sensing. The mechanoluminescence and tunable emissions from prepared film make this luminescent materials promising in the fields of dynamic imaging of force and anti-counterfeiting.

中文翻译：

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通过阳离子取代来设计压电发光离子掺杂氧硫化物中的可调谐发射和机械发光用于光学传感

能够直接将外部机械刺激转化为光的压电机械发光材料对于光电传感器件的发展具有决定性作用。然而，机械发光材料对发射光谱调制的需求很高，这对于应用很重要。在这里，我们采用盐熔法将发光离子掺杂到压电半导体氧硫化物(Sr,Ba)ZnOS中，形成多模发射材料。所制备的发光化合物可以同时产生光致发光和机械发光，用于温度和应力传感。通过控制发光离子Mn和Er的浓度可以获得多色发射的可调谐光致发光。随后，将这些材料与聚二甲基硅氧烷基质结合，制备用于光学传感的智能机械发光薄膜。所制备薄膜的机械发光和可调谐发射使这种发光材料在力的动态成像和防伪领域具有广阔的前景。