Premium
Elimination of Photon Quenching by a Transition Layer to Fabricate a Quenching‐Shield Sandwich Structure for 800 nm Excited Upconversion Luminescence of Nd 3+ ‐Sensitized Nanoparticles
Author(s) -
Zhong Yeteng,
Tian Gan,
Gu Zhanjun,
Yang Yijun,
Gu Lin,
Zhao Yuliang,
Ma Ying,
Yao Jiannian
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304903
Subject(s) - photon upconversion , materials science , photoluminescence , excited state , activator (genetics) , quenching (fluorescence) , nanoparticle , luminescence , excitation , optoelectronics , photochemistry , fluorescence , nanotechnology , optics , atomic physics , chemistry , biochemistry , physics , electrical engineering , engineering , gene
Nd 3+ ‐sensitized quenching‐shield sandwich‐structured upconversion nanoparticles are reported, which exhibit highly efficient upconversion photoluminescence under excitation by an 800 nm continuous‐wave laser. The transition‐layer structure is essential to bridge energy transfer from the sensitizer to the activator and simultaneously block energy back‐transfer from the activator to the sensitizer. These 800 nm‐excited upconversion nanoparticles are a key step toward the development of upconversion nanophosphors for biological applications.