Low Temperature Spectral Properties of Several Pr3+ Doped Borates under VUV Excitation

doi:10.3724/SP.J.1077.2007.00373

Abstract

Abstract: Low temperature spectra of SrB₄O₇:Pr³⁺, LaB₃O₆:Pr³⁺ and LaMgB₅O₁₀:Pr³⁺
were investigated by synchrotron radiation VUV light. Under VUV excitation,
photon cascade emission was found in SrB₄O₇:Pr³⁺, LaB₃O₆:Pr³⁺ and LaMgB₅O₁₀:Pr³⁺. All peaks in emission spectra were assigned. Because high phonon energy in borates results in non-radiative relaxation between ³P₀ and ¹D₂states of Pr³⁺, the second step emission ³P₀→3H_Jis very low in SrB₄O₇:Pr³⁺ and even is absent in LaB₃O₆:Pr³⁺ and LaMgB₅O₁₀:Pr³⁺. In the excitation spectra of LaB₃O₆:Pr³⁺ and LaMgB₅O₁₀:Pr³⁺, along with the 4f5d absorption bands, a weak line due to ³H₄→ ¹S₀ transition also was detected. From the position of ³H₄→ ¹S₀transition, the energy difference of ¹S₀state and the lowest 4 f5d state was determined.

Key words: Pr3+ ion, photon cascade emission, VUV excitation, low temperature spectra

CLC Number:

O433
O482

FU Yi-Bing,ZHANG Guo-Bin,WU Wen-Qing,QI Ze-Ming,SHI Jun-Yan,SHI Chao-Shu. Low Temperature Spectral Properties of Several Pr³⁺ Doped Borates under VUV Excitation[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00373.

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Low Temperature Spectral Properties of Several Pr³⁺ Doped Borates under VUV Excitation

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