@TechConnectify this is one of the reasons it's so tricky to produce high-brightness high-CRI low-CT (e.g. <3500K) LEDs. to get the low CT you need to cut the blue peak significantly, but since the blue light is what pumps the phosphor you can't mask it much without tanking the power efficiency (and increasing thermal load), plus you need to dope the materials just right to keep the SPD curve closely matching the point on the Planckian locus.
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