title: Near-Infrared Quantum Cutting Long Persistent Luminescence.
abstract: By combining the unique features of the quantum cutting luminescence and long persistent luminescence, we design a new concept called "near-infrared quantum cutting long persistent luminescence (NQPL)", which makes it possible for us to obtain highly efficient (>100%) near-infrared long persistent luminescence in theory. Guided by the NQPL concept, we fabricate the first NQPL phosphor Ca2Ga2GeO7:Pr(3+),Yb(3+). It reveals that both the two-step energy transfer of model (I) and the one-step energy transfer of model (IV) occur in (3)P0 levels of Pr(3+). Although the actual efficiency is not sufficient for the practical application at this primitive stage, this discovery and the associated materials are still expected to have important implications for several fields such as crystalline Si solar cells and bio-medical imaging.
authors.affiliation: Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou,730000, China.
authors.forename: Zehua
authors.initials: Z
authors.lastname: Zou
authors.affiliation: Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou,730000, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Feng
authors.affiliation: Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou,730000, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Cao
authors.affiliation: Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou,730000, China.
authors.forename: Jiachi
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou,730000, China.
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Wang