title: Intense photoluminescence from ceria-based nanoscale lamellar hybrid.
abstract: Nanosheets, which are ultrathin inorganic crystals, have the potential to exhibit unique surface states and quantum effects. These nanosheets can be further manipulated to form lamellar structures for the fabrication of advanced hybrid nanomaterials. Here we report that conventionally nonluminescent ceria yields intense UV photoluminescence with an internal quantum yield (QY) of 59% when self-organized into a nanosheet lamellar architecture with dodecyl sulfate (DS) bilayers. The origin of luminescence exist at the organic/inorganic interfaces, where surface Ce(3+) ions of ceria nanosheet layers graft with DS anions to activate radiative 5d → 4f transition.
authors.affiliation: Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan. takatani@gpo.kumamoto-u.ac.jp
authors.forename: Takaaki
authors.initials: T
authors.lastname: Taniguchi
authors.forename: Yuki
authors.initials: Y
authors.lastname: Sonoda
authors.forename: Makoto
authors.initials: M
authors.lastname: Echikawa
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Kazuto
authors.initials: K
authors.lastname: Hatakeyama
authors.forename: Shintaro
authors.initials: S
authors.lastname: Ida
authors.forename: Michio
authors.initials: M
authors.lastname: Koinuma
authors.forename: Yasumichi
authors.initials: Y
authors.lastname: Matsumoto