Near-Infrared Emission of Er3+ Sensitized by Mn4+ in Ca14Zn6Al10O35 Matrix

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• 作者：Xuejun Gao ; Wei Li ; Xiaoliang Yang ; Xiangliang Jin ; Siguo Xiao
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：December 17, 2015
• 年：2015
• 卷：119
• 期：50
• 页码：28090-28098
• 全文大小：685K
• ISSN：1932-7455

文摘

A novel near-infrared luminescent material Ca₁₄Zn₆Al₁₀O₃₅:Mn⁴⁺, Er³⁺ has been synthesized by a sol鈥揼el method. The Ca₁₄Zn₆Al₁₀O₃₅:Mn⁴⁺, Er³⁺ phosphor exhibits strong near-infrared emission around 1540 nm with a wide excitation band extending from 250 to 550 nm. Efficient energy transfer from Mn⁴⁺ to Er³⁺ in Ca₁₄Zn₆Al₁₀O₃₅ is observed and gives about 13 times enhancement on the Er³⁺-1540 nm emission excited at 455 nm, which makes it convenient to obtain high-power emission by commercial GaN LED pumping. The energy transfer mechanism is discussed based on Dexter鈥檚 theory and Inokuti鈥揌irayama/Yokota鈥揟animoto models. It is believed that a dipole鈥揹ipole interaction between Mn⁴⁺ and Er³⁺ ions is responsible for the large enhancement of 1540 nm emission.