Figure 6.

Power dependence of UC emissions. Dependence of the green (green line and symbols) and red (red line and symbols) UC emissions on excitation power for (a) Y1.97Yb0.02Er0.01O3, (b) Y1.94Yb0.05Er0.01O3, and (c) Y1.89Yb0.10Er0.01O3 NPs.

Lojpur et al. Nanoscale Research Letters 2013 8:131   doi:10.1186/1556-276X-8-131
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