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Mechanism Studies on the Superior Optical Limiting Observed in Graphene Oxide Covalently Functionalized with Upconversion NaYF 4 :Yb 3+ /Er 3+ Nanoparticles
Author(s) -
He Tingchao,
Wei Wei,
Ma Lin,
Chen Rui,
Wu Shixin,
Zhang Hua,
Yang Yanhui,
Ma Jan,
Huang Ling,
Gurzadyan Gagik G.,
Sun Handong
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201200249
Subject(s) - graphene , photon upconversion , nanoparticle , nanocomposite , covalent bond , materials science , oxide , absorption (acoustics) , chemical engineering , nanotechnology , photochemistry , optoelectronics , chemistry , organic chemistry , luminescence , composite material , engineering , metallurgy
Superior optical limiting (OL) characteristics and mechanisms are explored in a novel nanocomposite made from graphene oxide (GO) and NaYF 4 :Yb 3+ /Er 3+ nanoparticles via covalent chemical bonding. Due to the synergistic effect of enhanced nonlinear scattering, two‐photon absorption, and efficient energy transfer between NaYF 4 :Yb 3+ /Er 3+ nanoparticles and GO, the nanocomposite displays dramatically improved OL effects compared to either GO or NaYF 4 :Yb 3+ /Er 3+ nanoparticles, making it a very promising material for practical OL devices.