Efficient blue to near-infrared luminescence properties in Pr3+ - Yb3+ co-doped Li8Bi2(MoO4)7 phosphor
Source abstract
Abstract
Abstract Down-conversion phosphors could absorb underutilized high-energy photons and convert to available near-infrared (NIR) photons in 900 – 1100 nm improving the spectral mismatch of silicon-based solar cells. Herein, we report the preparation of Pr3+-Yb3+ co-doped Li8Bi2(MoO4)7 molybdate phosphors by sol-gel method. The pure phases of all samples were confirmed by the X-ray diffraction. Under 453 nm blue light excitation, near infrared emission from Yb3+ and Pr3+can be generated. The NIR emission integral intensity of the Pr3+ - Yb3+ co-doped sample was 1.6 times than that of the corresponding Pr3+ single - doped sample. The optimal doping concentration of Yb3+ was 0.05 and the highest efficiency was 62.7%, furthermore the energy transfer process in Pr3+-Yb3+ was analyzed. The results indicate that Li8Bi2(MoO4)7: Pr3+, Yb3+ NIR phosphors have potential applications in the spectral converters of crystalline silicon solar cells.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Radiation Detection and Scintillator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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