Photoluminescence properties of Pr3+ doped ZrO2 formed by plasma electrolytic oxidation

Plasma Electrolytic Oxidation Ceramic Coatings on Zirconium (Zr) and Zr-Alloys: Part-II: Properties and Applications

“…Ćirić and Stojadinović also produced the ZrO 2 coating with Pr 3+ incorporated particles [76]. Accordingly, they found that increasing the treatment time of the PEO process also increased the incorporation of uniformly distributed Pr 3+ in the composite coating, where its contribution concurrently stabilized the tetragonal zirconia phase.…”

“…ZrO 2 based materials have drawn considerable interest from many researchers in photonics, optoelectronics, and electronics due to their outstanding thermal, mechanical, electrical, and optical properties [70][71][72][73]. Optical transparency in the visible and near infrared region, high refractive index, low optical loss, wide energy bandgap (~5 eV), and low phonon frequency (~470 cm −1 ) have demonstrated zirconia as a potential matrix host for fabrication of doped compounds using highly efficient luminescent materials ranging from rare-earth to transition metals [74][75][76][77][78][79]. Recently, researchers have intended to take advantage of PEO processing to entrap rare-earth oxide particles in the ZrO 2 matrix [74][75][76][77][78][79][80][81].…”

“…Accordingly, they found that increasing the treatment time of the PEO process also increased the incorporation of uniformly distributed Pr 3+ in the composite coating, where its contribution concurrently stabilized the tetragonal zirconia phase. They categorized PL emission spectral features into two distinct regions, including a broad PL band centered at approximately 495 nm and secondly a region due to the 4f-4f transitions of Pr 3+ , where the most intense one was from the 1 D 2 → 3 H 4 transition [76]. The same authors reported fabrication of doped composite zirconia coatings containing Tm 3+ and Yb 3+ using the PEO process [75].…”

Effect of Pr doping on structure and luminescence properties of ZrO2 nanoparticles

“…Doping ZrO 2 with RE elements, such as Eu and Pr ions, leads to emission in the visible and near-infrared region corresponding to 4f inter-level electronic transitions at Pr or Eu ions. In particular, Pr 3+doped samples display multiple emissions in the visible range (blue, green and red light) which facilitates their use in active optical windows as well as in imaging, lighting and displays application [9].…”