AI Article Synopsis
- - Researchers are focusing on single-component phosphors that emit light in broad bands to improve color quality (CRI) and warmth (CCT) in white-light-emitting diodes (WLEDs) since such materials are currently scarce.
- - The study introduces a simple solid-state method to create new tetrabutylammonium copper halide phosphors, which exhibit effective warm white light emission with luminescence peaks at 494 and 654 nm.
- - The new phosphors achieve a high photoluminescence quantum yield of 93.7%, with a WLED CIE coordinate of (0.3620, 0.3731), a CRI of 89, and a low CCT of
Article Abstract
In order to achieve a high color-rendering index (CRI) and low correlated color temperature (CCT) indoor lighting, single-component phosphors with broad-band dual emission are in high demand for white-light-emitting diodes (WLEDs). However, phosphors with such fluorescent properties are rare at present. Herein, we report a facile solid-state chemical method for the synthesis of single-component phosphor with broad-band emission and a large Stokes shift that can meet the requirements of future white-light sources. These new tetrabutylammonium copper halides phosphors have excellent warm white emission characteristics, and their luminescence peaks are located at 494 and 654 nm. The optimized photoluminescence (PL) quantum yield can reach 93.7 %. The typical CIE coordinate of the as-fabricated WLED is at (0.3620, 0.3731) with a CRI of 89 and low CCT of 4516 K.
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| http://dx.doi.org/10.1002/chem.202202675 | DOI Listing |
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