Structural and luminescence studies on Er3+/Yb3+ co-doped boro-tellurite glasses
Structural and luminescence studies on Er3+/Yb3+ co-doped boro-tellurite glasses
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DOI：
10.1016/j.jallcom.2013.01.190
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发表时间：
2013-06
影响因子：
6.2
通讯作者：
K. Maheshvaran;S. Arunkumar;V. Sudarsan;V. Natarajan;K. Marimuthu
中科院分区：
文献类型：
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作者：
K. Maheshvaran;S. Arunkumar;V. Sudarsan;V. Natarajan;K. Marimuthu
本文报道了Er 3 +/Yb 3+共掺硼碲酸盐玻璃50 TeO 2 + 15 H3 BO 3+（5−x−y）La 2 O3 + 15 MgCO 3 + 15 SrCO 3 + xEr 2 O3 + yYb 2 O3（其中x=1，y=0，0.5，1和2，wt%）的结构和光学行为，通过傅里叶变换红外（FTIR）、拉曼、吸收、发光、上转换发光和寿命测量研究了它们在绿色激光应用中的性能。通过红外光谱和拉曼光谱证实了TeOTe、O3 BOBO 3键的弯曲振动和OH基的基本伸缩振动。通过吸收光谱，计算并报道了成键参数、振子强度和Judd-Ofelt（JO）参数。由发光光谱计算了2 H_（9/2）→ 4 I_（15/2）、4S_（3/2）→ 4 I_（15/2）和4 I_（13/2）→ 4 I_（15/2）激发态跃迁的辐射参数。记录了玻璃的上转换发光光谱，讨论了玻璃的激发态吸收（ESA）和能量转移（ET）过程。研究了标题玻璃在980激发波长下4 I13/2→ 4 I15/2跃迁的发光衰减曲线。
The present work reports structural and optical behaviour of the Er3+/Yb3+co-doped boro-tellurite glasses 50TeO2+15H3BO3+(5−x−y)La2O3+15MgCO3+15SrCO3+xEr2O3+yYb2O3(where x=1, y=0, 0.5, 1 and 2 in wt%) studied through Fourier transform infrared (FTIR), Raman, absorption, luminescence, upconversion luminescence and lifetime measurements for green laser applications. The TeOTe, O3BOBO3bond bending vibrations and the fundamental stretching vibration of OH groups are confirmed through FTIR and Raman spectra. Through the absorption spectra, bonding parameters, oscillator strengths and Judd–Ofelt (JO) parameters were calculated and reported. From the luminescence spectra, radiative parameters have been calculated for the2H9/2→4I15/2,4S3/2→4I15/2and4I13/2→4I15/2excited state transitions. Upconversion luminescence spectra of the prepared glasses have been recorded and the excited state absorption (ESA) and Energy transfer (ET) processes are discussed. The luminescence decay curves for the4I13/2→4I15/2transition of the title glasses under 980 excitation wavelength have also been studied and reported.