Lighting sources with full‐color visible output are widely preferred in practical applications. In addition, modern lighting sources also tend to be intelligentized, and the intelligentization asks for smart luminescence materials. In this work, we attempt to develop novel full‐color emitting material with temperature sensing and thermochromatic ability. To this end, the Cu²⁺ is successfully reduced to Cu⁺ which is incorporated into the germanate glasses. The glasses are prepared via a melt‐quenching technique using graphite powders as reducing reagent. The supper‐broadening of the excitation and the emission spectra of Cu⁺ in the germanate glasses are observed. Full‐color emission is realized by introducing Tm³⁺ as co‐dopant to provide the blue component in the spectra. The energy transfer behavior between Cu⁺ and Tm³⁺ is investigated, and it is found that these two luminescence centers are independently existent without energy transfer between them. The chromatic properties of the Cu⁺/Tm³⁺ co‐doped glasses are tuned by Tm³⁺ concentration and excitation wavelength. The temperature sensing based on the fluorescence intensity ratio technique is demonstrated, and a constant sensitivity for the temperature detection is obtained. Moreover the thermochromatic property is also investigated, and it is found that the studied Cu⁺/Tm³⁺‐doped glasses exhibit excellent thermochromatic performance.

中文翻译：

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Cu +和Tm3 +共掺杂德国锗玻璃的全彩白光，温度自我监控和热致变色效应

在实际应用中，具有全色可见光输出的光源是广泛首选的。另外，现代光源也趋向于智能化，并且智能化要求智能的发光材料。在这项工作中，我们尝试开发具有温度感应和热致变色功能的新型全色发光材料。为此，将Cu ²⁺成功还原为Cu ⁺，并结合到了锗酸盐玻璃中。通过使用石墨粉末作为还原剂的熔融淬火技术制备玻璃。观察到了锗酸盐玻璃中Cu ⁺的超宽激发和发射光谱。通过引入Tm ³⁺实现全色发射作为共掺杂物以提供光谱中的蓝色成分。研究了Cu ⁺和Tm ³⁺之间的能量转移行为，发现这两个发光中心是独立存在的，而在它们之间没有能量转移。Cu ⁺ / Tm ³⁺共掺杂玻璃的色性质通过Tm ³⁺浓度和激发波长来调节。对基于荧光强度比技术的温度感测进行了说明，并获得了恒定的温度检测灵敏度。此外，还研究了热致变色性质，发现所研究的Cu ⁺ / Tm ³⁺掺杂的玻璃具有出色的热色性能。