We demonstrated the emission of multicolored light from a powder electroluminescent device using a thermochromic material through temperature control. At 20°C, the emission of a sapphire blue light was observed. Upon increasing the temperature, the color of the thermochromic materials changed, leading to sky‐blue emission.

中文翻译：

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新型粉末电致发光器件，可通过热响应控制发射颜色

我们通过温度控制演示了使用热致变色材料的粉末电致发光器件发出的多色光。在20℃下，观察到蓝宝石蓝光的发射。随着温度的升高，热致变色材料的颜色发生变化，导致天蓝色发射。