) between Dy³⁺ ions in this host was calculated to be 17 Å, indicating that both nearest-neighbor ion interactions and dipole-dipole interactions were involved. The PL decay lifetime and internal quantum efficiency (IQE) of the synthesized phosphor are determined. Photometric studies reveal that the CIE coordinates fall very close to the white light region, and the CCT value is found to be greater than 5000 K, indicating that the prepared NCPO: Dy³⁺ phosphor is a promising candidate for cool WLEDs for outdoor lighting applications.
Bhardwaj et al. (2026) studied this question.