铒掺杂硼酸盐玻璃中的激发态阱

铒掺杂硼酸盐玻璃广泛应用于发光材料中，研究其发光动力学性质对于优化和提高其发光效率具有重要意义. 本文采用传统的熔融淬火法合成了摩尔比为2%的掺铒硼酸盐玻璃，并在低于硼酸盐玻璃转变温度(260 °C)下退火，退火处理后的掺铒硼酸盐玻璃光学性质得到了一定程度的提高. 硼酸盐玻璃未掺杂和掺杂Er³⁺的热性能采用差示扫描量热法以10 °C/min的速度进行测量. 同时还测量了掺铒硼酸盐玻璃发光机理的吸收光谱、激发光谱、稳态发射光谱、瞬态发射光谱和衰减动力学曲线. 实验结果表明Er³⁺在不同激发波长下556 nm处发射时具有不同的寿命，在掺铒硼酸盐玻璃中可能存在激发态阱，利用实验数据得到了激发态阱的深度为0.14 eV.

Excited State Trap in Erbium Doped Borate Glass

Erbium doped borate glass is widely used in luminescent materials, the luminescence dynamics of erbium doped borate glass is of great significance for optimizing and improving the luminous efficiency. The 2% molar ratio erbium doped borate glass was synthesized by the traditional melt quenching method, and annealed at 260 oC below the borate glass transition temperature. The thermal performance parameters of borate glass undoped and doped with Er³⁺ were measured by differential scanning calorimetry with 10 oC/min. The transient emission spectrum and decay kinetics curves were measured for the luminescence mechanism of erbium doped borate. Er³⁺ ions have different lifetime when emitted at 556 nm with different excitation wavelengths, the excited state trap may exist in erbium doped borate glass.