Praseodymium‐Doped Photo‐Luminescent Strontium Indate Nanoparticles by Ultrasonic Spray Pyrolysis - Progress in Nanotechnology - Wiley Online Library

Submicrometer spherical particles of praseodymium (Pr)-doped strontium indate were synthesized by spray pyrolysis using ultrasonic nebulization. The morphology, crystalline structure, particle size, and size distribution were studied by X-ray diffraction, scanning, and transmission electron microscopies. The spherical agglomerates were found to be made up of very small nanocrystallites. Upon excitation by UV radiation, sharp luminescence emission bands due to Pr were observed in the blue, green, and red regions in these Pr-doped samples. The rare earth praseodymium (Pr) is a very attractive activator, because it contains several metastable multiplets, which can lead to a variety of emissions right from the blue to the red and infrared wavelengths,³ which is of great importance for luminescent devices, especially in modern display technologies like field-emission displays.

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