An investigation of Mn4+ doped BeAl2O4 single crystal for WLEDs application
Source abstract
Abstract
Abstract A novel red-emitting Mn4+ doped BeAl2O4 single crystal is synthesized by a Czochralski technique. Narrow red emission is observed from the Mn4+ ions occupying Al3+ sites in distorted octahedrons. Crystal field parameter Dq, Racah parameters B and C are determined to be 2392, 1423 and 3332 cm−1, respectively. The value of Dq/B indicates that Mn4+ ions are in a weak crystal field. The quenching temperature and activation energy are calculated from the temperature-dependent measurement for emission intensity and decay time. A detailed discussion of thermal quenching mechanism reveals that the crossover via the 4T2 level is the main quenching route in the prepared material.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Microwave Dielectric Ceramics Synthesis · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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