Europium-Activated Perovskite Cubical SrZrO₃ Red Phosphor: Synthesis, Characterization, and Sustainable Applications in PC-LEDs and Environmental Forensic Analysis

A series of SrZrO₃ : Eu³⁺ nano phosphors synthesized by a modified high-temperature solid-state reaction method. The structural, functional vibration groups, optical, morphological, luminescence and quantum yield studies were characterized through XRD, FTIR, UV, ‘SEM & HR-TEM’ and PL analyses respectively. The SrZrO₃ : Eu³⁺ phosphor has a perovskite orthorhombic structure and emits intense red emission around 612 nm when it is excited under 465 nm and covers NUV light range. The calculated average lifetime indicates the nature of the allowed emission transition in Eu³⁺ (2.44 μs). The calculated colour purity and Commission International del’ Eclairagethe (CIE) chromaticity coordinates are 97.9 % and (0.5894, 0.4031) respectively. The observed quantum yield and thermal stability for the SrZrO₃ : Eu³⁺ (9 mol %) phosphor are 22 % and 87 % at 423 K, respectively. These obtained results suggest that SrZrO₃ : Eu³⁺ (9 mol %) phosphor would meliorate for red-emitting phosphor in profound RGB-based pc-WLED applications.