Bifunctional KZnF3:Er3+/Mn2+ perovskite nanoparticles for achieving pure red upconversion luminescence and magnetic resonance imaging. - Yang, Xu; Zhao, Xiaofan; Wang, Rui; Yang, Zining; Song, Changqing; Yuan, Maohui; Han, Kai; Lan, Sheng; Wang, Hongyan; Xu, Xiaojun (Journal of Materials Science, 2021)