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FIELD : medicine.
SUBSTANCE : invention can be used in biomedicine for blood vessels visualization, in electronics for up-conversion transducres in silicon solar batteries cells. The complex silicate of rare earth elements in an nanoamorphous state has the composition Sr2Y(8-x-y)YbxErySi6O26, where 0.05≤x≤1; 0.01≤y≤0.2 is the up-conversion phosphor of red light with a high degree of radiation.
EFFECT : green radiation intensity is reduced.
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