Estimation of spectroscopic parameters and TL glow curve analysis of Eu-activated CaYO phosphor.

The solid-state reaction method was utilised to create a down-conversion phosphor in an air environment in CaYO:Eu nanocrystalline material. The calcination temperature was set at 1000 °C, and the sintering temperature was set at 1300 °C. Following annealing, confirmation of the crystallinity quality of the phosphor was accomplished by the use of X-ray diffraction analysis.

Optimizing the luminescence efficiency of an europium (Eu) doped SrYO phosphor for flexible display and lighting applications.

This research paper reports the synthesis and luminescence study of an Eu activated SrYO phosphor prepared by a modified solid-state reaction method with varying concentrations of Eu ions (0.1-2.5 mol%).

Intense green light emission and thermoluminescence glow curve analysis of Tb -activated CaY O phosphor.

Here, the synthesis and luminescence analysis of the Tb -activated phosphor were reported. The CaY O phosphors were synthesized using a modified solid-state reaction method with a variable doping concentration of Tb ion (0.1-2.

A υ-Constrained Matrix Adaptation Evolution Strategy With Broyden-Based Mutation for Constrained Optimization.

To solve the nonconvex constrained optimization problems (COPs) over continuous search spaces by using a population-based optimization algorithm, balancing between the feasible and infeasible solutions in the population plays an important role over different stages of the optimization process. To keep this balance, we propose a constraint handling technique, called the υ -level penalty function, which works by transforming a COP into an unconstrained one. Also, to improve the ability of the algorithm in handling several complex constraints, especially nonlinear inequality and equality constraints, we suggest a Broyden-based mutation that finds a feasible solution to replace an infeasible solution.