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. Author manuscript; available in PMC: 2016 Jun 20.
Published in final edited form as: ACS Nano. 2016 Jan 11;10(1):1060–1066. doi: 10.1021/acsnano.5b06383

Figure 3.

Figure 3

Excitation spectrum of β-NaYF4:20%Yb3+, 2%Er3+@β-NaYF4:10%Yb3+ (core/Yb3+ active shell) nanoparticle with (black squares) and without (red circles) IR-806 dye sensitization.