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Article summary:
1. This article discusses the development of a highly efficient near-infrared phosphor LaMgGa11O19:Cr3+ for use in light-emitting diodes (LEDs).
2. The phosphor has a broad-band emission centered at 770 nm with internal/external quantum efficiency of 82.6%/42.5%.
3. The emission peak positions can be tuned from 715 to 800 nm by changing the Cr3+ concentration, and the phosphor also shows excellent luminescence thermal stability.
Article analysis:
The article is generally reliable and trustworthy, as it provides detailed information about the development of a highly efficient near-infrared phosphor LaMgGa11O19:Cr3+. The authors provide evidence for their claims through XRD patterns, UV diffuse reflection spectra, photoluminescence (PL), photoluminescence excitation (PLE) and temperature-dependent luminescence spectra, as well as luminescence decay curves with μF900 flash lamp. Furthermore, they explain how changing the Cr3+ concentration can tune the NIR emission with tunable band centers from 715 to 800 nm due to energy transfer among multiple Cr3+ sites.
The article does not appear to have any biases or one-sided reporting, as it presents both sides of the argument equally and objectively. It does not contain any unsupported claims or missing points of consideration; all claims are backed up by evidence provided in the article. There are no unexplored counterarguments or promotional content present in the article either.
The only potential issue is that possible risks associated with using this new phosphor are not noted in the article; however, this is likely because such risks would need to be assessed through further research before they could be discussed in detail here.