Abstract
The distorted octahedral crystal field environment in the monoclinic wolframite structure is generating excitement due to its apparently quite favorable for efficient luminescence. In this work, undoped, Eu3+-doped and Yb3+/Er3+-codoped ScNbO4 with monoclinic wolframite structure were synthesized with the traditional high-temperature solid-state reaction method. An indirect bandgap of 3.903 eV was determined for ScNbO4 host with the well-known first-principle calculation. Its electronic and optical properties were revealed with the first-principle calculation simultaneously. Besides, the self-activated luminescent properties of undoped ScNbO4 were investigated in experimental. The luminescent properties Eu3+-doped and Yb3+/Er3+-codoped ScNbO4 were also present and the luminescent mechanisms were discussed. All the obtained results can provide an insightful understanding of ScNbO4 with monoclinic wolframite structure.
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