Synthesis, characterization, photoluminescence and ferroelectric properties of PbTiO3 nanotube arrays

Strain effect on the visible emission in PbTiO3 nanotubes: Template and wall-thickness dependence

“…As is depicted in Fig. 2, broad emission bands centered at 2.2e2.4 eV were detected commonly for all nanotube samples, which is consistent with the previous results [33,34]. This kind of green/ yellow emission has been observed in many other perovskite oxides with wide bandgaps [35e37], and has been known to originate from defect levels (e.g., oxygen vacancy), which are located within the bandgap [38e41].…”

Preparation of single-crystal PbTiO3 nanorods by phase transformation from Pb2Ti2O6 nanorods

“…Various techniques have been applied to prepare lead titanate powders, such as sol-gel method [4,5], oxidant-peroxo process [6], coprecipitation [7] and hydrothermal method [8][9][10], besides the traditional solid-state reaction of mixed oxides [11]. One-dimensional PbTiO 3 crystallites, such as nanowires, nanorods, nanotubes, nanostrips and fibers have been successfully prepared by sol-gel template and molten salt method [12][13][14][15][16][17][18]. In addition, PbTiO 3 nanowires, nanorods and nanotubes have been synthesized by microwave-hydrothermal, * Corresponding author.…”

Ordered Ferroelectric Lead Titanate Nanocellular Structure by Conversion of Anodic TiO2 Nanotubes

“…The ferroelectric properties of these PbTiO 3 nanocellular layers have origin in their highly ordered arrangement that is kept throughout the entire processing. In contrast to the rather tedious approaches, where for example sol-gel approaches [5] and porous alumina membranes [19] (templates) are used for synthesis of perovskites nanostructures, [27] herein we use directly the Pb-filled TiO 2 nanotube layers as a part of the desired material -PbTiO 3 -without necessity of dissolving the template. Furthermore, within the present work we have established optimal conditions for PbTiO 3 nanotube generation -concerning both the tube filling and the annealing conditions.…”