LiYF4:Er3+ Yb3+ @LiYF4 upconversion nanoparticles(Oil soluble upconversion nanoparticles)

LiYF4:Er3+,Yb3+@LiYF4 upconversion nanoparticles refers to a type of nanomaterial composed of LiYF4 crystals doped with erbium ions (Er3+) and ytterbium ions (Yb3+).These nanoparticles have unique optical properties that allow for the conversion of lower energy photons into higher energy photons through a process called upconversion.The dopant ions, Er3+ and Yb3+,play crucial roles in the upconversion process.Yb3+ absorbs excitation photons of longer wavelength, transferring the energy to Er3+ ions. The excited Er3+ ions then emit photons of higher energy, resulting in upconverted luminescence at shorter wavelengths.The use of LiYF4 as the host material provides a stable and suitable matrix for incorporating the erbium and ytterbium dopants. It offers high transparency, low phonon energy, and efficient energy transfer, which enhances the upconversion efficiency.

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