Abstract
Singlephase powders of Ba4Y3F17:Yb:Pr solid solutions with an average agglomerate size of 400 nm were synthesized by coprecipitation from aqueous solutions. It was shown that the down-conversion mechanism in the investigated samples was quantum cutting, with one photon absorbed by Pr3+ ions resulting in two photons emitted by Yb3+ ions. At first, overall the external quantum yield of down-conversion luminescence measured appeared to be relatively high, with a maximum value of 2.9% for the Ba4Y3F17:Pr(0.1%):Yb(10%) sample. It makes this compound promising for Sibased solar cells efficiency enhancement.
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Kuznetsov, S. V., Nizamutdinov, A. S., Mayakova, M. N., Voronov, V. V., Madirov, E. I., Khadiev, A. R., … Fedorov, P. P. (2019). Synthesis and downconversion luminescence of Ba4Y3F17:Yb:Pr solid solutions for photonics. Nanosystems: Physics, Chemistry, Mathematics, 10(2), 190–198. https://doi.org/10.17586/2220-8054-2019-10-2-190-198
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