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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.

Author information

1
Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang 330013, People's Republic of China.
2
Science and Technology on Aerospace Chemical Power Laboratory, Hubei Institute of Aerospace Chemotechnology, Xiangyang, 441003, People's Republic of China.
3
Department of Physics, Hunan Normal University, Changsha, 410081, People's Republic of China.

Abstract

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.

PMID:
31196297
DOI:
10.1166/jnn.2019.16776

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