Fabrication of ultrathin metal oxide films using Langmuir–Blodgett deposition

Abstract

Thin Y2O3 films have been fabricated using a Langmuir–Blodgett (LB) process. Uniform LB films of yttrium arachidate have been successfully deposited up to 200 layers. These films were found to decompose uniformly above 300 °C leaving a thin oxide layer. X-ray diffraction, laser reflection, and Rutherford backscattering have been used to determine crystal structure and stoichiometry of the film before, during, and after thermal decomposition. This test system demonstrates the potential application of Langmuir–Blodgett deposition for inorganic oxide film fabrication of thicknesses ranging from 0.1 to 40 nm.

A low-temperature, soft chemistry method for the synthesis of zirconia nanoparticles in thermally evaporated fatty amine thin films

“…Alternatively, metal oxide thin films can be synthesized by initial electrostatic complexation of the metal ions to the Langmuir lipid monolayer and subsequent chemical or thermal treatment of the lipid lamellae. Ultrathin films of TiO 2 [21,22], Y 2 O 3 [23], ZnO [24,25], and Er 2 O 3 [26] have been successfully realized by this method. The electrostatic complexation techniques can similarly be extended to thermally evaporated lipid thin films.…”

A Novel Method for Preparing Ordered SnO2/TiO2 Alternate Nanoparticulate Films

“…oxide, rare earth oxide (5,9,10), and Cd oxide (5,11) can be fabricated in this way. Our interests lie in constructing a SnO 2 /TiO 2 alternate pure inorganic periodic structure by this method.…”

Nanoparticle Organization at the Air‐Water Interface and in Langmuir‐Blodgett Films

“…Subsequently, a number of groups have investigated this approach from different angles and have reported on the in situ synthesis of nanoparticles of gold [106], CdI 2 [107], CdS [101, 108± 113], CdSe [114], PbS [115±118], TiO 2 [119], copper and copper sulfide [118,120,121] to name just some of the chemical compositions investigated. While not always leading to the formation of nanoparticles, the chemical insertion method in LB films has also been used with considerable success in realizing ultrathin films of oxides such as TiO 2 [122], Y 2 O 3 [123], ZnO [124,125] and Er 2 O 3 [126].…”