In this work, ZrO₂-Ce: YAG composite phosphor ceramic for the application of high brightness w-LEDs was fabricated for the first time. A novel redshift mechanism of Ce³⁺ emission is discovered in the composite ceramics that the oxygen vacancy introduced into YAG lattice by the high-temperature reduction of Zr⁴⁺ can cause a remarkable non-radiative transition of excited electrons and produce a large redshift from 540 nm to 570 ∼ 610 nm. This kind of redshift has provided a new approach to the supplement of the red component in Ce³⁺ emission spectra beyond the regular ways of larger rare-earth ions doping or M²⁺-N⁴⁺ double substitution.

中文翻译：

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ZrO ₂ -Ce：YAG复合荧光粉陶瓷中Ce ³⁺发射的新红移机理

在这项工作中，首次制造了用于高亮度w-LED的ZrO ₂ -Ce：YAG复合荧光粉陶瓷。在复合陶瓷中发现了一种新的Ce ³⁺发射的红移机理，即Zr ⁴⁺的高温还原引入YAG晶格中的氧空位可引起激发电子的显着非辐射跃迁，并产生较大的红移。 540nm至570〜610nm。这种红移提供了一种新的方法来补充Ce ³⁺发射光谱中的红色成分，这是常规方法，而不是使用较大的稀土离子掺杂或M ²⁺ -N ⁴⁺双重取代。