@article{CTT100888233, author = {Nomura, K. and Umezawa, M. and Tezuka, K. and Tasaki, T. and Okubo, K and Soga, K.}, title = {Effect of polarization of surrounding organic molecules on upconversion emission of β-NaYF4 Co-Doped with Er3+ and Yb3+}, journal = {Journal of Luminescence}, year = 2021, }