Upconversion luminescence of Gd2O3:Ln3+ nanorods for white emission and cellular imaging via surface charging and crystallinity control

• المؤلفون الرئيسيون: Wu, Mingda, Guan, Guijian, Yao, Bingqing, Teng, Choon-Peng, Liu, Shuhua, Tee, Si Yin, Ong, Boon Chong, Dong, Zhili, Han, Ming-Yong
• مؤلفون آخرون: School of Materials Science and Engineering
• التنسيق: مقال
• اللغة: English
• منشور في: 2020
• الموضوعات: Engineering::Materials; Upconversion Luminescence; Surface Charging
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/144499

In this paper, an oxide upconversion nanomaterial, Gd2O3:Ln3+, as an alternative counterpart of NaGdF4:Ln3+ was developed via controlled surfactant-free synthesis, flexible lanthanide loading, compositional/size tuning, hexagonal-to-cubic lattice refinement, and positive surface charging to achieve a substantial enhancement of upconversion luminescence (∼30 times upon calcination at 1000 vs 600 °C; ∼4000 times versus its hydroxide form) due to high crystallinity and extremely low residual impurities for white emission and cellular imaging.