Nonstoichiometry as a hidden aspect of TbAl3(BO3)4 optical properties†

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Dalton Transactions Pub Date : 2024-10-24 DOI:10.1039/D4DT02695K

A. B. Kuznetsov, A. Y. Jamous, M. I. Rakhmanova, E. A. Simonova, V. A. Svetlichnyi, A. E. Kokh, V. N. Yudin, S. F. Solodovnikov, V. S. Shevchenko and K. A. Kokh

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Abstract

TbAl₃(BO₃)₄ should not be considered as a strictly stoichiometric compound. A variety of Tb_1+xAl_3−x(BO₃)₄ (x = −0.1–0.15) single phase compositions with the R32 space group were synthesized in the TbBO₃–(Al₂O₃·B₂O₃) system. The K₂Mo₃O₁₀–B₂O₃–Al₂O₃ flux was used to grow Tb_1+xAl_3−x(BO₃)₄ (x = 0.06 and 0.09) crystals. The orthoborates have typical luminescence in the green range which correlated with the ⁵D₃ → ⁷F₆ electron transition of Tb³⁺. However, deviating from stoichiometry can result in halving the quantum efficiency of luminescence. The SHG efficiency from 1064 nm radiation for Tb_1+xAl_3−x(BO₃)₄ crystals (x = 0.06 and 0.09) was found to be 1.82 and 1.53 times higher than that of KDP, respectively.

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非化学计量是 TbAl3(BO3)4 光学特性的一个隐含方面

TbAl3(BO3)4 不应被视为严格意义上的化学计量化合物。在 TbBO3-(Al2O3-B2O3) 体系中合成了多种具有 R32 空间群的 Tb1+xAl3-x(BO3)4 (x= -0.1 - 0.15) 单相成分。K2Mo3O10-B2O3-Tb2O3 通量用于生长 Tb1+xAl3-x(BO3)4 (x= 0.06 和 0.09) 晶体。正硼酸盐具有典型的绿色发光，这与 Tb3+ 的 5D3→7F6 电子转变有关。然而，偏离化学计量会导致发光量子效率减半。研究发现，Tb1+xAl3-x(BO3)4 晶体（x= 0.06 和 0.09）在 1064 纳米波长辐射下的 SHG 效率分别是 KDP 的 1.82 倍和 1.53 倍。

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.