Up-Conversion Luminescence of NaYF4:Yb3+/Er3+ Nanoparticles Embedded into PVP Nanotubes with Controllable Diameters

Peng Zou, Xia Hong, Yadan Ding, Zhenyi Zhang, Xueying Chu, Talgar Shaymurat, Changlu Shao and Yichun Liu Link to full article

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