Chemical substitution-induced exceptional emitting-wavelength tuning in transition metal Ni2+-doped ferroelectric oxides with ultrabroadband near-infrared luminescence
Chemical substitution-induced exceptional emitting-wavelength tuning in transition metal Ni2+-doped ferroelectric oxides with ultrabroadband near-infrared luminescence
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DOI：
10.1039/c4tc00313f
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发表时间：
2014-01-01
影响因子：
6.4
通讯作者：
Hao, Jianhua
中科院分区：
文献类型：
--
作者：
Bai, Gongxun;Zhang, Yang;Hao, Jianhua
同时铁电和光学性能存在于过渡金属Ni 2+掺杂的钙钛矿Sr 1-xTiO 3。近红外（NIR）光致发光的大调谐是通过化学取代，由于在晶体场的变化作用于Ni 2+掺杂离子。所制备的材料显示出从1100 nm到超过1600 nm的超宽带近红外发光。NIR发射的峰位置可以被精细地调节，并且观察到269 nm的总位移。观察背后的机制进行了讨论;有趣的可调发光起源于铁电矩阵的特定结构的变化。
Simultaneous ferroelectric and optical properties are present in transition metal Ni2+-doped perovskites BaxSr1-xTiO3. Large tuning of near-infrared (NIR) photoluminescence is achieved by chemical substitution due to the variation in the crystal field acting on Ni2+ doping ions. The prepared materials show ultrabroadband NIR luminescence, from 1100 nm to over 1600 nm. The peak position of the NIR emission can be finely tuned, and a total shift of 269 nm was observed. The mechanism behind the observation is discussed; the interestingly tunable luminescence originates from a change in the specific structure of the ferroelectric matrix.