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Studies from W.J. Dressick et al in the Area of Nanoparticles Described [Preparation and layer-by-layer solution deposition of Cu(In,Ga)O2...

September 9, 2014



Studies from W.J. Dressick et al in the Area of Nanoparticles Described [Preparation and layer-by-layer solution deposition of Cu(In,Ga)O2 nanoparticles with conversion to Cu(In,Ga)S2 films]

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Nanoparticles. According to news reporting originating from Washington, District of Columbia, by NewsRx correspondents, research stated, "We present a method of Cu(In,Ga)S2 (CIGS) thin film formation via conversion of layer-by-layer (LbL) assembled Cu-In-Ga oxide (CIGO) nanoparticles and polyelectrolytes. CIGO nanoparticles were created via a novel flame-spray pyrolysis method using metal nitrate precursors, subsequently coated with polyallylamine (PAH), and dispersed in aqueous solution."

Our news editors obtained a quote from the research, "Multilayer films were assembled by alternately dipping quartz, Si, and/or Mo substrates into a solution of either polydopamine (PDA) or polystyrenesulfonate (PSS) and then in the CIGO-PAH dispersion to fabricate films as thick as 1-2 microns. PSS/CIGO-PAH films were found to be inadequate due to weak adhesion to the Si and Mo substrates, excessive particle diffusion during sulfurization, and mechanical softness ill-suited to further processing. PDA/CIGO-PAH films, in contrast, were more mechanically robust and more tolerant of high temperature processing. After LbL deposition, films were oxidized to remove polymer and sulfurized at high temperature under flowing hydrogen sulfide to convert CIGO to CIGS."

According to the news editors, the research concluded: "Complete film conversion from the oxide to the sulfide is confirmed by X-ray diffraction characterization."

For more information on this research see: Preparation and layer-by-layer solution deposition of Cu(In,Ga)O2 nanoparticles with conversion to Cu(In,Ga)S2 films. Plos One, 2014;9(6):e100203. (Public Library of Science - www.plos.org; Plos One - www.plosone.org)

The news editors report that additional information may be obtained by contacting W.J. Dressick, Center for Bio, Molecular Science & Engineering, United States Naval Research Laboratory, Washington, District of Columbia, United States. Additional authors for this research include C.M. Soto, J. Fontana, C.C. Baker, J.D. Myers, J.A. Frantz and W. Kim (see also Nanoparticles).

Keywords for this news article include: Washington, District of Columbia, United States, North and Central America, Emerging Technologies, Nanoparticle, Nanoparticles, Nanotechnology.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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