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J Nanosci Nanotechnol. 2019 Dec 1;19(12):7840-7845. doi: 10.1166/jnn.2019.16776.

Synthesis of Fluorescent Eu-Doped InVO₄ Nanocrystals by Using In(OH)₃ Templates with Controlled Morphologies.

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Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang 330013, People's Republic of China.
Science and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace Chemotechnology, Xiangyang, 441003, People's Republic of China.
Department of Physics, Hunan Normal University, Changsha, 410081, People's Republic of China.


In this study, In(OH)₃ nanocrystals with three morphologies including rods, cubes and spheres were synthesized through a hydrothermal method. The morphology and crystalline were manipulated by controlling the growth speed and the addition of ascorbic acid. The InVO₄ nanocrystals were obtained by a process sacrificing In(OH)₃ templates. The phase transformation of rods and cubes generated size-controllable products, whereas that of nanospheres formed hollow micro-spheres. InVO₄ nanocrystals display a brilliant yellow emission band with the peak at 517 nm. Intriguingly, luminescent rare-earth Eu ions with red emission could be doped into InVO₄ nanocrystals during the phase transformation. Excitation and the emission spectra indicated an excitation energy transfer from the vanadate to the rare-earth ions.


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