Green Synthesis of Ce Doped Cs3MnBr5 for Highly Stable Violet Light Emitting Diodes
Source abstract
Abstract
Over the past few decades, wide-bandgap semiconductor materials have been extensively explored for short-wavelength light-emitting diode (LED) owing to their rich technological applications spanning from phototherapy, sensors, and healthcare, to the indoor plantation. However, to date, few papers have reported violet-emitting (< 435 nm) perovskite materials and LEDs. Despite the tunable bandgap property, perovskite researchers are still lagging to achieve efficient violet emitting material. The presence of toxic lead, environment stability, complex synthesis, and achieving a large bandgap emitter have put a constraint on the development of violet perovskite LEDs. To address the abovementioned issues, herein we report a simple water-assisted synthesis of lead-free wide-bandgap perovskite with bright violet emission. No use of other solvent during synthesis makes our process very simple, cost-effective, and eco-friendly. As synthesized Ce doped -Cs3MnBr5 shows a visible blind absorption with an effective optical bandgap of 3.12 eV. Introduction of Ce in -Cs3MnBr5 lattice demonstrate dual violet emission peaks at 387 and 419 nm. Our synthesized -Cs3MnBr5:Ce also shows a good environment stability with narrow full-width half maxima (FWHM). We achieve the violet light with standard chromaticity coordinates of (0.18044, 0.02034) which makes -Cs3MnBr5:Ce a promising candidate for stable violet perovskite LEDs. [GRAPHICS] .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
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