Photoluminescence properties of multilayer oxide films intercalated with rare earth ions by the layer-by-layer technique

Abstract

Multilayer oxide films consisting of a TiO-Eu3+-TiO-Tb3+-NbO-Tb3+-NbO-Eu3+ unit which was prepared by the layer-by-layer technique, showed photoluminescence with a high intensity containing both red and green lights.

Photoluminescence of nanosheets doped with rare earth ions

“…In the other group, the guest ions are inserted into the transition metal oxide nanosheets to form the phosphors [7][8][9][10][11][12][13]. In this system, effective energy transfer from the transition metal oxide nanosheet hosts to Ln luminescence activators may take place.…”

“…Among the photoactive components, Tb 3+ and Eu 3+ are particularly interesting because of their strong and well-defined green or red photoluminescence property, while one of the candidate host nanosheets for such an ideal phosphor material is TiTaO 5 − nanosheet, which could be easily fabricated by the soft chemical exfoliation described below. It must point out that the stabilities of photoluminescence properties and the efficiency of energy transfer tend to be susceptible to the amount of the cointercalated species [12][13][14].…”

Preparation of an enzyme/inorganic nanosheet/magnetic bead complex and its enzymatic activity

“…However, immobilization method for enzyme based on covalent binding is relatively complicate in manipulation, and the method has potential precariousness of denaturation of immobilized enzymes. On the other hand, inorganic-layered materials are able to incorporate guest molecules with various sizes through facile solution processing [16][17][18]. Recently, magnetic Fe 3 O 4 @ Na 2 Ti 3 O 7 nanosheets were successfully synthesized [19].…”

Self-Assembly Deposition and Luminescence Properties of TiNbO5− and TiTaO5− Nanosheets

“…[4][5][6][7][8] Typically, the rare earth (RE) ions are doped into the transition metal oxide nanosheets to form the red, green or blue-emission phosphors. [7][8][9][10][11] In this system, the RE ions could be excited through the nanosheet host. Thus, the transformation of photoluminescence energy may take place between the host and guest and could be widely used to design the solid practical nanosheet-based phosphor.…”