Long Jiaqi, Chu Fujuan, Wang Yuzhen, Zhao Chong, Dong Wenfeng, Yuan Xuanyi, Ma Chaoyang, Wen Zicheng, Ma Ran, Du Miaomiao, Cao Yongge
Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China , Beijing 100872, China.
Inorg Chem. 2017 Sep 5;56(17):10381-10386. doi: 10.1021/acs.inorgchem.7b01268. Epub 2017 Aug 24.
Two series of phosphors of CaMgSc(PO):Dy and SrMgSc(PO):Dy single-phase white-emitting phosphors with high thermal emission stability are synthesized by the high-temperature solid-state reaction. The crystal structure, photoluminescence (PL), PL excitation (PLE), and thermal PL quenching spectra of CaMgSc(PO):xDy and SrMgSc(PO):xDy were investigated and compared in detail. Upon excitation at 387 nm, MMgSc(PO):xDy (M = Ca/Sr) showed white emission centered at 480, 571, 660, and 754 nm. The white-emitting Dy-phosphor CaMgSc(PO):Dy (CMSP:Dy) had good terminal stability. The emission intensity of CaMgSc(PO):Dy still remained 95.2% of that at room temperature at 160 °C, and remained 77.3% at 300 °C under 387 nm excitation.
通过高温固相反应合成了具有高热发射稳定性的CaMgSc(PO₄)₃:Dy和SrMgSc(PO₄)₃:Dy单相白色发光磷光体的两个系列。详细研究并比较了CaMgSc(PO₄)₃:xDy和SrMgSc(PO₄)₃:xDy的晶体结构、光致发光(PL)、PL激发(PLE)和热PL猝灭光谱。在387nm激发下，MMgSc(PO₄)₃:xDy (M = Ca/Sr)呈现出以480、571、660和754nm为中心的白色发射。白色发光的Dy磷光体CaMgSc(PO₄)₃:Dy (CMSP:Dy)具有良好的热稳定性。在387nm激发下，CaMgSc(PO₄)₃:Dy的发射强度在160℃时仍保持室温下的95.2%，在300℃时仍保持77.3%。
