This review discusses silicon-based oxynitride and nitride phosphors for white LEDs. These materials have gained attention due to their potential applications in solid-state lighting and displays. The structures of these phosphors are built from crosslinked SiN₄ tetrahedra, which facilitate efficient excitation and emission. The materials exhibit broad excitation bands from ultraviolet to visible light, enabling strong absorption of blue-to-green light. Their structural versatility allows for emission across a wide range of colors, making them suitable for white LEDs. The phosphors show high luminous efficacy, chromatic stability, and excellent color rendering. They are also suitable for bichromatic or multichromatic LEDs. The review covers the synthesis methods, including solid-state reaction, gas-reduction nitridation, and carbothermal reduction and nitridation. Applications in white LEDs are discussed, highlighting their advantages over traditional phosphors. The phosphors are effective in producing white light with adjustable color temperatures and high color rendering. The review concludes that silicon-based oxynitride and nitride phosphors are promising candidates for white LEDs due to their superior performance characteristics.This review discusses silicon-based oxynitride and nitride phosphors for white LEDs. These materials have gained attention due to their potential applications in solid-state lighting and displays. The structures of these phosphors are built from crosslinked SiN₄ tetrahedra, which facilitate efficient excitation and emission. The materials exhibit broad excitation bands from ultraviolet to visible light, enabling strong absorption of blue-to-green light. Their structural versatility allows for emission across a wide range of colors, making them suitable for white LEDs. The phosphors show high luminous efficacy, chromatic stability, and excellent color rendering. They are also suitable for bichromatic or multichromatic LEDs. The review covers the synthesis methods, including solid-state reaction, gas-reduction nitridation, and carbothermal reduction and nitridation. Applications in white LEDs are discussed, highlighting their advantages over traditional phosphors. The phosphors are effective in producing white light with adjustable color temperatures and high color rendering. The review concludes that silicon-based oxynitride and nitride phosphors are promising candidates for white LEDs due to their superior performance characteristics.