Characterization of structural and optical properties of Mn²⁺‐doped Zn₂GeO₄ nanorods as an efficient green phosphor for solid‐state lighting

Abstract

A series of Mn 2+ -doped zinc germinate ZGO:xMn 2+ (x = 0-0.05) nanorods was synthesized successfully using a hydrothermal method. XRD revealed that crystal phases of the ZGO:xMn 2+ were rhombohedral and in the R-3 space group. The Williamson-Hall equation was also used to explain the strain, nanocrystalline size, and stacking fault. Green LEDs were successfully fabricated by coating ZGO:Mn 2+ nanorods onto UV-LED chips. For high color purity, CIE of the fabricated green LEDs were (0.2404, 0.5428), which made this material a promising candidate for fabrication of UV-based green LEDs.

Two-Dimensional Hybrid Perovskite with High-Sensitivity Optical Thermometry Sensors

“…Furthermore, the properties of 2D hybrid perovskites can be effectively optimized by regulating the configuration of the inorganic octahedra units. Divalent manganese (Mn 2+ ), known for its optical activity, − has been successfully incorporated into 3D perovskite nanocrystals − and 2D organic–inorganic hybrid perovskites, − , to regulate luminous performance associated with 4 T 1 – 6 A1 transitions of Mn 2+ . However, previous research has mainly focused on the application of perovskites in light-emitting diodes and β-ray scintillators, with limited exploration of optical temperature sensing based on Mn 2+ -doped luminescent materials due to the absence of narrow-band 2D organic–inorganic hybrid perovskites.…”

Achieving excellent thermostable red emission in singly Mn2+-doped near-zero thermal expansion (NZTE) material Li2Zn3(P2O7)2

“…With regard to the exceptional advantages of high color rendering, long service lifetime, low energy consumption, eco-friendliness, fast response, phosphor-converted white-light-emitting diodes (pc-WLEDs) play an important role in many areas, such as solid-state lighting, backlight displays, and information security. 1–6 Phosphors are one of the indispensable components in pc-WLED devices, and their photoluminescence (PL) thermal stability plays a crucial role in practical applications, which is usually evaluated by the thermal quenching (TQ) behavior. 7–10 Thermal quenching (TQ) is caused by the anabatic non-radiative relaxation of electrons from the excited state to the ground state at high working temperature.…”