From Bare Metal Powders to Colloidally Stable TCO Dispersions and Transparent Nanoporous Conducting Metal Oxide Thin Films

Abstract

Cataloged from PDF version of article.A simple, green, robust, widely applicable, multi-gram and cost-effective 'one-pot' synthesis of aqueous dispersions of colloidally stable 3-6 nm TCO NPs using bare metal powder precursors is described, and their utilization for making TCO high surface area nanoporous films is also demonstrated, which speaks well for their usage in a wide range of possible processes and devices. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Self-doping for visible light photocatalytic purposes: construction of SiO2/SnO2/SnO2:Sn2+nanostructures with tunable optical and photocatalytic performance

“…Lattice expansion is not new and has been observed in many doped metal oxides. 27 Basically, doping of impurity ions into nanocrystals will not only alter the lattice parameters and electronic structure but also lead to novel properties. For instance, CeF 3 :Eu 3+ nanocrystals exhibited a lattice contraction, distorted lattice symmetry, and enhanced luminescent properties via Gd 3+ doping.…”

Aluminum-doped zinc oxide nanoparticles with tunable near-infrared absorption/reflectance by a simple solvothermal process

“…Transparent conductive oxides (TCOs) are considered as a technologically important class of materials because of their unique combination of good electrical conductivity, high chemical stability, visible light transparency and near infrared light reectance/absorption. [1][2][3][4][5][6][7][8][9] For example, TCOs such as antimony-doped tin oxide (ATO), 10 tin-doped indium oxide (ITO), 4 uorine-doped tin oxide (FTO), 11 aluminum-doped zinc oxide (AZO), 12 gallium-doped zinc oxide (GZO), 13 and indiumdoped zinc oxide (IZO) play a critical role in photovoltaic cells, 2,14 energy-efficient windows, at panel displays, light emitting diodes (LED) and liquid crystal display (LCD). Among them, ZnO based materials have recently gained more and more interests owing to both the low price and nontoxicity.…”

General method to synthesize ultrasmall metal oxide nanoparticle suspensions for hole contact layers in organic photovoltaic devices

“…[21] We found that by replacing the original solvent of water with n-butanol, and by reducing the metal concentration to 0.1 M, the diameter of the dispersed NPs measured using dynamic light scattering (DLS) was reduced from ∼5 nm to 0.7 ± 0.1, 1.6 ± 0.4, 1.0 ± 0.2, and 0.9 ± 0.4 nm for MoO 3 , WO 3 , NiO x , and CoO x , respectively ( Table I). The surfactant-free NP suspensions exhibit different colors arising from band gap and/or intraband d-d transitions of the metal oxides [ Fig.…”