Efficient luminomagnetic and conductive Eu and Dy doped ZnO phosphors for multifunctional devices

Investigation of physicochemical characteristics of Dy3+ modified ZnO nanoparticles

“…Figure 6 demonstrates the variation of the real part of dielectric permittivity as a function of frequency and it can be concluded from the figure 6 that the dielectric constant decreases as the frequency of the applied electric field increases and this effect can be explained based on Maxwell Wegner model [38]. In a dielectric sample, the conducting grains are surrounded by poorly conducting grain boundaries, and at lower frequencies, the resistive grain boundary effect predominates and leads to the accumulation of electric charges at grain boundaries which results in a high value of dielectric permittivity but at higher frequencies conducting grains give rise to a lower dielectric constant which occurs may be due hopping of charge carriers amongst the Zn 2+ and Dy 3+ resulting the independent direction of dipole moment upon applied field.…”

Sol–Gel-Derived Biodegradable Er-Doped ZnO/Polyethylene Glycol Nanoparticles for Cell Imaging

“…Yang et al investigated the ZnO defects involved in energy transfer for Tb-doped ZnO, and they found that zinc interstitials (Zn i ) and oxygen vacancies (V O ) were identified to participate in the energy transfer process. Europium (Eu) doping can enhance the visible fluorescence of ZnO by more than 100%, , and Kumar et al reported the potential of Eu-doped ZnO for red emission applications. Among rare-earth elements, erbium (Er) is a common element widely used as a dopant in ZnO due to its unique intra-4f shell transitions .…”

Regulating the interaction of Ru nanoparticles and an Eu2O3support achieves enhanced activity for ammonia synthesis

“…To expand the scope of oxide supported Ru catalysts in ammonia synthesis, it is still highly desirable to develop new efficient oxide supported Ru catalyst systems and understand the relationship between the activity and structure of the catalysts. As a typical and important rare earth oxide, europium oxide (Eu 2 O 3 ) has been widely applied in the fields of phosphors, [27][28][29][30] chemiluminescence sensors, [31][32][33] solidstate lasers 34 and electrodes. 35 In particular, Eu 2 O 3 has been demonstrated to be an excellent support for dispersion of metal NPs as a result of its intrinsic features of chemical stability, high melting point and low volatility.…”