Affiliation:
1. State Key Laboratory of Explosion Science and Technology School of Mechatronical Engineering Beijing Institute of Technology Beijing 100081 China
2. Beijing Key Laboratory of Energy Conversion and Storage Materials College of Chemistry Beijing Normal University Beijing 100875 China
3. College of Chemistry and Environmental Science Qujing Normal University Qujing 655011 China
Abstract
AbstractUpconversion luminescence (UCL) in organometallic complexes has attracted great interest in photovoltaics and biological applications due to their fascinating energy transfer mechanism from low‐energy photon to high‐energy photon. However, photon‐upconversion operating in a single discrete entity remains a challenge caused by low‐absorption cross section of the luminescent lanthanide element. Here, a novel upconversion system is reported combining Yb (Ytterbium) sensitizers and Er (Erbium) activators in the film by electropolymerization, which leads to excited‐state absorption (ESA) and energy transfer upconversion (ETU) processes. For the first time, the UCL has been achieved in the thin films upon near‐infrared laser irradiation, and the upconversion intensity exhibits up to 30‐fold enhancement with the variation of Yb/Er ratio.
Funder
National Natural Science Foundation of China
State Key Laboratory of Explosion Science and Technology
China Postdoctoral Science Foundation
Beijing Institute of Technology Research Fund Program for Young Scholars
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
7 articles.
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