Affiliation:
1. Nankai University
2. Beijing University of Posts and Telecommunications
3. University of Electronic Science and Technology of China
Abstract
We describe an experimental investigation of photon upconversion (UC) in a series of perovskite BaTiO3/SrTiO3 superlattices doped with different lanthanide compositions. We show that UC emission can be effectively enhanced by precisely incorporating a set of lanthanide ions into separated layers rather than homogeneously distributing the dopant ions in the host lattice. The use of an inert layer in the superlattice can suppress deleterious energy cross-relaxation. Furthermore, UC emission can be rendered by controlling the energy migration mediated by the Yb-doped sublattice. These results demonstrate the opportunity to modulate energy migration and transfer processes through the rational design of superlattice structures.
Funder
National Natural Science Foundation of China
State Key Laboratory of Information Photonics and Optical Communications
Fundamental Research Funds for the Central Universities
Natural Science Foundation of Tianjin City
Department of Science and Technology of Sichuan Province
Subject
Atomic and Molecular Physics, and Optics
Cited by
4 articles.
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