Abstract Highly crystalline RE2-xWO6:xLn3+ (RE, Ln = Er3+ and Tm3+, x = 0.02 to 0.50 mol.) phosphors were successfully synthesized by the solid-state reaction method. The cathodoluminescence (CL) properties of the RE2-xWO6:xLn3+ phosphors were studied in detail by changing the Ln3+ (Er, Tm) doping concentration, accelerating voltage and tuning the electron beam current. The CL spectra of the undoped Er2WO6 phosphor showed bright red emission due to the 4F9/2→4I15/2 (Er3+) transition, while Tm3+ doped Er2WO6 display the strong green emission due to 4S3/2→4I15/2 (Er3+) transitions. The Er3+ doped Tm2WO6 phosphor showed strong white light emission due to the combination of several bands in the CL spectra. The CL emission intensity of the phosphors linearly enhanced when the electron beam current was increased from 1.00 nA to 7.0 nA and no saturation emission was noted in this range. The Commission Internationale del’Eclairage chromaticity coordinates were measured for the RE2WO6:Ln3+ phosphors.

中文翻译：

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RE2WO6:Ln3+ (RE, Ln = Er3+ 和 Tm3+) 荧光粉的 BullColor 可调阴极发光特性及其显微成像

摘要 通过固相反应法成功合成了高度结晶的RE2-xWO6:xLn3+（RE，Ln = Er3+ 和Tm3+，x = 0.02 至0.50 mol.）荧光粉。通过改变 Ln3+ (Er, Tm) 掺杂浓度、加速电压和调整电子束电流，详细研究了 RE2-xWO6:xLn3+ 荧光粉的阴极发光 (CL) 特性。由于 4F9/2→4I15/2 (Er3+) 跃迁，未掺杂的 Er2WO6 荧光粉的 CL 光谱显示出明亮的红色发射，而 Tm3+ 掺杂的 Er2WO6 则由于 4S3/2→4I15/2 (Er3+) 跃迁而显示出强烈的绿色发射。由于 CL 光谱中几个波段的组合，Er3+ 掺杂的 Tm2WO6 磷光体显示出强烈的白光发射。当电子束电流从 1.00 nA 增加到 7 时，荧光粉的 CL 发射强度线性增强。0 nA 并且在此范围内没有注意到饱和发射。测量了 RE2WO6:Ln3+ 荧光粉的 Commission Internationale del'Eclairage 色度坐标。