Enhancement of Visible Upconversion Emission in Y2O3:Er3+-Yb3+ by Addition of Thiourea and LiOH in the Phosphor Synthesis

<div>FT-IR spectra of Y2O3:Er3+-Yb3+ phosphors for different precipitant agents.</div>

Journal of Nanomaterials

Figure 5: Enhancement of Visible Upconversion Emission in Y2O3:Er3+-Yb3+ by Addition of Thiourea and LiOH in the Phosphor Synthesis