By a News Reporter-Staff News Editor at Science Letter -- Research findings on Nanostructures are discussed in a new report. According to news reporting originating from Catania, Italy, by NewsRx correspondents, research stated, "The ability to form ordered nanostructures at the wafer level with low cost methodologies has represented a challenge in the last decade in many research fields spanning from nanoelectronics to photovoltaics (PVs). For the latter application the nanostructures have demonstrated interesting capabilities for exploiting the quantum effects in terms of efficient visible light absorption."
Our news editors obtained a quote from the research from the University of Catania, "To fabricate ordered nanostructures many solutions have been proposed but they provide feature densities lower than 10(9)cm(-2) or present high fabrication costs. We propose a wafer level and low-cost Lithography based on block CoPolymers self-assembling (LCP), which allows the formation of nanofeatures controlled down to 10nm and density higher than 5x10(10)cm(-2). We propose to use this technique to form radial junctions in nanoholes for solar cells. The approach is similar to that of the nanowires, i.e., it decouples the optical path of the visible photons from the electrical path of the carriers, but since the one-dimensional (1D) structures are embedded inside the bulk of the wafer the structure is more robust and allows easier implementation. To form the junction inside the nanoholes a novel strategy based on the deposition of monolayers of dopant-containing molecules is proposed."
According to the news editors, the research concluded: "This technique allows to obtain shallow and controlled junction depths with peak carrier concentrations of about 10(19)cm(-3) for both n- and p-type doping."
For more information on this research see: Nanofabrication processes for innovative nanohole-based solar cells. Physica Status Solidi A-Applications and Materials Science, 2013;210(8):1564-1570. Physica Status Solidi A-Applications and Materials Science can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany (see also Nanostructures).
The news editors report that additional information may be obtained by contacting C. Garozzo, University of Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy. Additional authors for this research include C. Bongiorno, S. Di Franco, M. Italia, A. La Magna, S. Scalese, P.M. Sberna and R.A. Puglisi.
Keywords for this news article include: Italy, Europe, Catania, Nanostructural, Nanostructures, Nanotechnology, Emerging Technologies
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