Synthesis, structure, and luminescence properties of a novel double-perovskite Sr 2 LaNbO 6 :Mn 4+ phosphor
Source abstract
Abstract
Abstract A novel phosphor, Sr 2 LaNbO 6 :Mn 4+ , is synthesized by conventional solid-state reaction. The phosphor can be excited at 300–500 nm and emit a deep-red light. An emission band peak of 694 nm is observed from the spin-forbidden transition 2 E → 4 A 2 of Mn 4+ ions. Energy transfer between the Mn 4+ –Mn 4+ pairs decreases fluorescence decay time from 0.815 ms to 0.512 ms. The resistance of luminescence against thermal impact is also investigated by emission spectroscopy at heating temperatures from 300 K to 500 K. The calculated activation energy Δ E (∼0.345 eV) demonstrate good thermal stability of the phosphors. All these results indicate that the phosphor can be applied in white-light-emitting diodes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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