摘要： We propose a latent energy transfer process in traditional Eu3+, Tb3+-doped phosphors and present a new class of Eu3+, Tb3+-doped Na4CaSi3O9 phosphors, enabled by luminescence decay dynamics that optimize the electron-transfer energy process. Compared with other Eu3+, Tb3+-doped phosphors, the as-synthesized Eu3+, Tb3+-doped Na4CaSi3O9 phosphors show improved large-scale tunable emission color from green to red upon UV excitation, controlled by the Tb3+/Eu3+ doping ratio. Detailed spectroscopic measurements in the VUV-UV-vis region were used to determine the Eu3+-O2- charge transfer energy, 4f-5d transition energies and the energies of 4f excited multiplets of Eu3+ and Tb3+ with different 4fN electronic configurations. The Tb3+→Eu3+ energy transfer pathway in the co-doped sample was systematically investigated, employing luminescence decay dynamics analysis to elucidate the relevant energy transfer mechanism in combination with the appropriate model simulation. To demonstrate their application potential, a prototype white light-emitting diode (WLED) device was successfully fabricated using the yellow luminescence NCSO:0.03Tb3+,0.05Eu3+ phosphor with high thermal stability and a BaMgAl10O17:Eu2+ phosphor in combination with a near-UV chip. These findings open up a new avenue to realize and develop multifunctional high-performance phosphors by manipulating the energy transfer process for practical applications.