@article {10.3844/ajeassp.2015.310.317,
article_type = {journal},
title = {pH Mediated Control Synthesis of Lanthanide-Doped YPO4 Upconversion Nano/Microcrystals},
author = {Tan, Meiling and Hao, Shuwei and Meng, Xiangbin and Liu, Jing and Shang, Yunfei and Yang, Chunhui and Chen, Guanying},
volume = {8},
number = {3},
year = {2015},
month = {Jun},
pages = {310-317},
doi = {10.3844/ajeassp.2015.310.317},
url = {https://thescipub.com/abstract/ajeassp.2015.310.317},
abstract = {A pH-mediated rational control over the phase transformation, morphology and size of lanthanide doped YPO4 nano/microcrystals has been accomplished using a hydrothermal route. The morphology of the resulting particles evolves from the spheres, to the nanoflakes and finally to the nanorods when increasing the pH value of the reaction solution from 1 to 9, while the induction of crystal phase transformation from a tetragonal structure to a hexagonal structure takes place at pH = 5. When excited at 980 nm, the hexagonal phase YPO4•0.8H2O: 18%Yb3+, 2%Er3+ nanoflakes prepared at pH = 7 exhibit the strongest UC emission intensity among investigated samples of varying size, phase and morphologies. This work provides a paradigm on the controlled synthesis of lanthanide doped upconverting orthophosphates, which hold great promise for various photonic and biophotonic applications. },
journal = {American Journal of Engineering and Applied Sciences},
publisher = {Science Publications}
}