Blue Emitting BaAl2O4:Ce3+ Nanophosphors with High Color Purity and Brightness for White LEDs

被引：7
作者：
Chatterjee, Rituparna [1 ]
Saha, Subhajit [1 ]
Panigrahi, Karamjyoti [1 ]
Ghorai, Uttam Kumar [2 ]
Das, Gopes Chandra [1 ]
Chattopadhyay, Kalyan Kumar [1 ,3 ]
机构：
[1] Jadavpur Univ, Sch Mat Sci & Nanotechnol, Kolkata 700032, India
[2] Ramakrishna Mission Vidyamandira, Swami Vivekananda Res Ctr, Dept Ind Chem, Belur Math 711202, Howrah, India
[3] Jadavpur Univ, Dept Phys, Kolkata 700032, India
来源：
MICROSCOPY AND MICROANALYSIS | 2019年 / 25卷 / 06期
关键词：
blue emission; rare earth; nanophosphors; photoluminescence; sol-gel; white LEDs; LUMINESCENCE; CE3+;
D O I：
10.1017/S1431927619014958
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：1466 / 1470
页数：5
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