In this work, strongly blue emitting Ce3+-activated BaAl2O4 nanophosphors were successfully synthesized by a sol–gel technique. The crystal structure, morphology, and microstructure of the nanophosphors have been studied by X-ray powder diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. The photoluminescence spectra show the impact of concentration variation of Ce3+ on the photoluminescence emission of the phosphor. These nanophosphors display intense blue emission peaking at 422 nm generated by the Ce3+ 5d → 4f transition under 350 nm excitation. Our results reveal that this nanophosphor has the capability to take part in the emergent domain of solid-state lighting and field-emission display devices.

中文翻译：

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用于白色 LED 的具有高色纯度和亮度的蓝色发光 BaAl2O4:Ce3+ 纳米荧光粉

在这项工作中，发出强烈蓝光的 Ce3+-活化的BaAl2○4通过溶胶-凝胶技术成功合成了纳米荧光粉。通过 X 射线粉末衍射、场发射扫描电子显微镜和高分辨率透射电子显微镜研究了纳米荧光粉的晶体结构、形貌和微观结构。光致发光光谱显示了 Ce 浓度变化的影响3+关于荧光粉的光致发光。这些纳米荧光粉在 Ce 产生的 422 nm 处显示出强烈的蓝色发射峰3+5d→ 4F在 350 nm 激发下跃迁。我们的研究结果表明，这种纳米荧光粉有能力参与固态照明和场发射显示设备的新兴领域。