Realizing broadband spectral conversion in novel Ce3+,Cr3+,Ln3+ (Ln = Yb, Nd, Er) tridoped near-infrared phosphors via multiple energy transfers
(2021) Ceramics International — Vol. 47, n° 3, p. 3127-3135 (2021)
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- Abstract
- The solar spectral converters mainly involve the energy transfer between two codoped ions. Here, we report a series of Ce3+, Cr3+, Ln3+ (Ln = Yb, Nd, Er) tridoped Gd3Sc2Ga3O12 (GSGO) phosphors with improved absorption and increasing near infrared (NIR) emission. We observed the multiple energy transfer behaviors of Cr3+→Ln3+, Ce3+→Ln3+, Ce3+→Cr3+, and Ce3+→Cr3+→Ln3+ in GSGO matrix. When Ce3+ is introduced into the GSGO:Cr3+,Ln3+ phosphors, the energy transfer of Ce3+→Cr3+→Ln3+ has been realized by utilizing the energy transfer bridge of the Cr3+ ion. Consequently, GSGO:Ce3+,Cr3+,Ln3+ can absorb almost all ultraviolet and visible (UV–Vis) light and produce strong NIR light thanks to the synergistic effect of Ce3+→Cr3+→Ln3+, improving the photovoltaic conversion efficiency of c-Si solar cells. Our results show that the prepared GSGO:Ce3+,Cr3+,Ln3+ have the potential application in the solar spectral material for c-Si solar cells. Meanwhile, the strategy of multiple energy transfers gives a new way to design the spectral conversion materials with wider absorption for c-Si solar cells.
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Dong, L., Zhang, L., Jia, Y., Xu, Y., Yin, S., & You, H. (2021). Realizing broadband spectral conversion in novel Ce3+,Cr3+,Ln3+ (Ln = Yb, Nd, Er) tridoped near-infrared phosphors via multiple energy transfers. Ceramics International, 47(3), 3127-3135. https://doi.org/10.1016/j.ceramint.2020.09.149 (Original work published 2021)