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Highly Intensified Upconversion Luminescence of Ca 2+ ‐doped Yb/Er:NaGdF 4 Nanocrystals Prepared by a Solvothermal Route
Author(s) -
Lei Lei,
Chen Daqin,
Xu Ju,
Zhang Rui,
Wang Yuansheng
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201301514
Subject(s) - nanocrystal , materials science , crystallinity , nanorod , luminescence , photon upconversion , dopant , doping , solvothermal synthesis , crystal structure , nanotechnology , ion , chemical engineering , crystal (programming language) , crystallography , optoelectronics , chemistry , composite material , organic chemistry , engineering , programming language , computer science
Upon introducing Ca 2+ dopants into the grain lattices by substituting Gd 3+ ions, irregular Yb/Er:NaGdF 4 nanocrystals prepared through a simple solvothermal route convert into highly uniform nanorods. Meanwhile, their upconversion luminescence intensifies by about 200 times, probably due to a modification of the crystal structure of NaGdF 4 and an improvement in the crystallinity of the nanophase.