成果归属作者：

房明浩 ; 刘艳改 ; 梅乐夫 ; 闵鑫 ; 吴小文

成果归属机构：

材料科学与工程学院

作者：

Chen, Huan ; Zhang, Ziqi ; Mi, Ruiyu ; Molokeev, Maxim S. ; Liu, Yukun ; Wang, Baochen ; Mei, Lefu ; Fang, Minghao ; Wu, Xiaowen ; Min, Xin ; Liu, Yan-gai

单位：

China Univ Geosci Beijing, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmet Minerals & Sol, Engn Res Ctr, Minist Educ Geol Carbon Storage & Low, Xueyuan Rd, Beijing 100083, Peoples R China;RAS, Kirensky Inst Phys, Lab Crystal Phys, KSC, SB, Fed Res Ctr, Krasnoyarsk 660036, Russia;Siberian Fed Univ, Krasnoyarsk 660041, Russia;Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia;Anhui Polytech Univ, Sch Chem & Environm Engn, Wuhu 241000, Peoples R China

关键词：

ENERGY-TRANSFER; LUMINESCENCE PROPERTIES; MN2+; PHOTOLUMINESCENCE; SUBSTITUTION; CE3+

摘要：

Tuning the components and multiple activator sites possesses profound significances on the regulation for corresponding luminescent properties of target phosphors. However, it is still challenging to realize full-visible emission via single activator in a single phase owing to the matrix diversity and uncertainty for multi-site occupation. Herein, we developed a family of whitlockite-type solid-solution phosphors Ca8MgGa1-yLay(PO4)7: Eu2+(y = 0-1) via inducing the La3+ ions into Ca8MgGa(PO4)7:Eu2+. The local environments of Eu2+ ions and corresponding tunable photoluminescent properties, decay times and thermal stability are revealed systematically in detail. Specially, the excitation and emission spectra of Ca8MgGa1-yLay(PO4)7: Eu2+ are broadened gradually, finally towards a full-visible emission with 152 nm bandwidth spectrum for the phosphor Ca8MgLa (PO4)7: Eu2+. WLED with a high color rendering index (CRI = 95) and low color temperature (CCT = 3764 K) was fabricated based on the full-visible emission Ca8MgGa0.2La0.8(PO4)7: 0.08Eu2+ phosphors under a 365 nm chip, indicating the prominent potentials for high-color-rendering WLEDs. These results in current work provide new ideas for synergetic manipulation of components and multiple activator sites towards a full-visible emission in single-phase applied for white lighting.

基金：

National Natural Science Foundation of China [52104272, 52072348]; Young Elite Scientists Sponsorship Program by CAST [2024QNRC001]; Program National Key R & D Program of China [2021YFC1910602-01]

语种：

英文

DOI：

10.1016/j.jlumin.2024.120795

来源：

JOURNAL OF LUMINESCENCE,2024():.

出版日期：

2024-11

提交日期：

2024-08-10

引用参考：

Chen, Huan; Zhang, Ziqi; Mi, Ruiyu; Molokeev, Maxim S.; Liu, Yukun; Wang, Baochen; Mei, Lefu; Fang, Minghao; Wu, Xiaowen; Min, Xin; Liu, Yan-gai. Synergetic manipulation of components and multiple activator sites towards full-spectrum lighting in Eu 2+-doped whitlockite phosphors for high color-rendering WLED[J]. JOURNAL OF LUMINESCENCE,2024():.