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Chemistry — A European Journal 

Towards White Light Emission Through Metal-to-Metal Charge Transfer (MMCT) Effect in Bi3+ Activated Ca2YTi2-mZrmGa3O12 (0≤m≤2) Garnets.

The emission behaviour of Bi3+ was explored in two different hosts, Ca2YTi2Ga3O12 (CYT:Bi) and Ca2YZr2Ga3O12: Bi3+ (CYTZ:Bi). A broad emission in the yellow–orange region in the former with a maximum at 552 nm was attributed to Bi3+–Ti4+ MMCT transitions. In the latter, the Bi3+ ions were found to emit in the violet region (λem=395 nm) due to the 3P0,1→1S0 transition. After suitable modification, the compounds CYT:Bi and CYTZ:Bi emit white light. More information can be found in the Research Article by P. Thilagar, S. Natarajan and co-workers (DOI: 10.1002/chem.202404016).