Phosphor-in-glass with Nd-doped glass for a white LED with a wide color gamut

A phosphor-in-glass (PiG) with red and green phosphors using Nd-doped glass as a host matrix was fabricated to produce a white light emitting diode (wLED) with a wide color gamut. The ${\mathrm{Lu}}_3{\mathrm{Al}}_5{\mathrm{O}}_{12}\text{:}{\mathrm{Ce}}^{3+}$ and ${\mathrm{CaAlSiN}}_3\text{:}{\mathrm{Eu}}^{2+}$ contents were adjusted to achieve white emission for liquid crystal display (LCD) applications. The silicate glass was doped with varying concentrations of ${\mathrm{Nd}}_2{\mathrm{O}}_3$ to modify the photoluminescence spectra of the wLED, by the hypersensitive absorption of the ${\mathrm{Nd}}^{3+}\text{:}{}^4{\mathrm{I}}_{9/2}\to {}^4{\mathrm{G}}_{5/2},{{}^2\mathrm{G}}_{7/2}$ transition. The color coordination, the color rendering index, and the color co-related temperature of the PiG-mounted LEDs were modified by the introduction of ${\mathrm{Nd}}^{3+}$. The color gamut of the wLED was monitored and found to have effectively improved with the ${\mathrm{Nd}}^{3+}$-doped silicate glass.