Gd 2 O 2 S: Er 3+ , Yb 3+ up-conversion phosphor was prepared by the high-temperature solid-state reaction method. The optimum multi-wavelength sensitive formulation and calcining conditions were optimized by the orthogonal experiments. The crystal structure, phase composition and luminescence characteristics of the samples were studied by means of XRD, UC luminescence spectra and decay curves, respectively. Under the excitation of 980 nm, 1064 nm and 1550 nm lasers, the samples showed characteristic green and red emissions, which belong to the transitions of Er 3+ ions 2 H 11/2 → 4 I 15/2 , 4 S 3/2 → 4 I 15/2 and 4 F 9/2 → 4 I 15/2 , respectively. In addition, the up-conversion luminescence mechanism of Gd 2 O 2 S: Er 3+ , Yb 3+ phosphors was explained based on the energy level d...

中文翻译：

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Er 3+，Yb 3+共掺杂Gd 2 O 2 S上转换荧光粉：晶体结构，上转换发光和发光寿命

通过高温固态反应法制备Gd 2 O 2 S：Er 3+，Yb 3+上转换荧光粉。通过正交实验优化了最佳的多波长敏感配方和煅烧条件。分别通过XRD，UC发光光谱和衰减曲线研究了样品的晶体结构，相组成和发光特性。在980 nm，1064 nm和1550 nm激光的激发下，样品显示出特征性的绿色和红色发射，属于Er 3+离子2 H 11/2→4 I 15/2→4 S 3/2的跃迁。 →4 I 15/2和4 F 9/2→4 I 15/2。此外，还基于能级d解释了Gd 2 O 2 S：Er 3+，Yb 3+荧光粉的上转换发光机理。