Premium
Intrinsic Reason for the Morphology Dependence of Luminescent Behavior: A Case Study with GdVO 4 :Eu 3+ Nanocrystals
Author(s) -
Yang Liusai,
Li Guangshe,
Zhao Minglei,
Zheng Jing,
Luo Dong,
Zheng Yunlong,
Li Liping
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201300928
Subject(s) - nanorod , luminescence , nanocrystal , chemistry , hydrothermal circulation , cationic polymerization , nanotechnology , pulmonary surfactant , morphology (biology) , chemical engineering , nanoparticle , optoelectronics , materials science , organic chemistry , biology , engineering , genetics , biochemistry
Rare‐earth orthovanadates, a kind of prototypical host, have received extensive attentions owing to their important applications. Although there has been great progress in the control of morphologies and optimzation of properties, the intrinsic reasons for the morphology dependence of their luminescence are still unclear. In this work, we chose GdVO 4 :Eu 3+ as a model compound to study. By varying the surfactant dose involved under mild hydrothermal conditions, several distinct morphologies, such as nanorods, nanowafers, nanoparticles, and snowballs were prepared. Depending on the morphologies and residual surfactant content, surface cationic nonstoichiometry and defects, especially for unstable VO 4 groups, were demonstrated to exist in GdVO 4 :Eu 3+ nanocrystals. The first experimental evidence for the relationship between surface defect states and luminescent emission of GdVO 4 :Eu 3+ nanocrystals is presented.