Cooperative Upconversion Luminescence Properties of Yb3+ and Tb3+ Heavily Codoped Silicate Garnet Obtained by Multiple Chemical Unit Cosubstitution
Cooperative Upconversion Luminescence Properties of Yb3+ and Tb3+ Heavily Codoped Silicate Garnet Obtained by Multiple Chemical Unit Cosubstitution
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多化学单元共取代获得Yb3和Tb3重共掺杂硅酸盐石榴石的协同上转换发光性能
DOI：
10.1021/acs.jpcc.6b11633
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发表时间：
2017-01
影响因子：
3.7
通讯作者：
Zhang Jiahua
中科院分区：
文献类型：
--
作者：
Xiao Wenge;Wu Dan;Zhang Liangliang;Zhang Xia;Hao Zhendong;Pan Guo-Hui;Zhao Haifeng;Zhang Ligong;Zhang Jiahua
众所周知，由于电荷失配，异价取代水平通常非常有限。特别是著名的硅酸盐石榴子石Ca 3Sc 2 Si 3 O 12（CSS），即使在CSS中Ca 2+的三价稀土离子（RE 3+）掺杂量低于2mol%时，也很难通过固相反应获得单一相，这在很大程度上限制了CSS成为RE 3+激活发光材料的理想基质，尤其是在需要高掺杂浓度的情况下。本文采用多化学单元共取代的策略，通过溶胶-凝胶法和高温烧结制备了稀土重掺杂的单相CSS。[CaO 8]、[Sc O 6]和[SiO 4]多面体分别被[RE O 8]、[Al O 6]和[Al O 4]的多个化学单元取代，可以充当彼此的电荷补偿剂，以促进RE 3+的掺杂水平高达20 mol %，这对于大多数RE 3+掺杂的发光材料来说足够高。此外，强烈的合作上转换（UC）发光（UC…
As is well-known, the aliovalent substitution level is usually very limited due to the charge mismatch. Particularly, the single phase can hardly be obtained by solid-state reaction for the famous silicate garnet Ca3Sc2Si3O12 (CSS), even when the doping level of trivalent rare earth ion (RE3+) for Ca2+ in CSS is lower than 2 mol %, which largely restricts CSS to be an ideal host for RE3+-activated luminescence materials especially where high doping concentration is required. Herein, by using the strategy of multiple chemical unit cosubstitution, we obtained RE3+ heavily doped single-phase CSS via the sol–gel method followed by high-temperature sintering. Multiple chemical unit substitutions of [REO8], [AlO6], and [AlO4], respectively, for [CaO8], [ScO6], and [SiO4] polyhedra can act as charge compensators for each other to promote the doping level of RE3+ up to 20 mol %, which is high enough for most of the RE3+-doped luminescence materials. Moreover, intense cooperative upconversion (UC) luminescence (UC...
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影响因子：
3.1
作者：
G. Novak;G. V. Gibbs
通讯作者：
G. Novak;G. V. Gibbs
通过能量传输优化和淬灭保护高度增强协同上转换发光
影响因子：
9.5
作者：
Xue Meng;Zhu Xingjun;Qiu Xiaochen;Gu Yuyang;Feng Wei;Li Fuyou
通讯作者：
Li Fuyou
影响因子：
3.3
作者：
F. Piccinelli;A. Lausi;A. Speghini;Marco Bettinelli
通讯作者：
F. Piccinelli;A. Lausi;A. Speghini;Marco Bettinelli
影响因子：
3.1
作者：
C. Geiger;T. Armbruster
通讯作者：
C. Geiger;T. Armbruster
影响因子：
1.5
作者：
T. Yamashita;Y. Ohishi
通讯作者：
T. Yamashita;Y. Ohishi