News Column

New Findings in Chalcogens Described from Chinese Academy of Science

June 24, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Chalcogens. According to news reporting from Chongqing, People's Republic of China, by NewsRx journalists, research stated, "Tungsten-doped (W-doped) zinc oxide (ZnO) nanostructures were synthesized on quartz substrates by pulsed laser and hot filament chemical vapor co-deposition technique under different oxygen pressures and doping levels. We studied in detail the morphological, structural and optical properties of W-doped ZnO by SEM, XPS, Raman scattering, and optical transmission spectra."

The news correspondents obtained a quote from the research from the Chinese Academy of Science, "A close correlation among the oxygen pressure, morphology, W concentrations and the variation of band gaps were investigated. XPS and Raman measurements show that the sample grown under the oxygen pressure of 2.7 Pa has the maximum tungsten concentration and best crystalline structure, which induces the redshift of the optical band gap."

According to the news reporters, the research concluded: "The effect of W concentration on the change of morphology and shift of optical band gap was also studied for the samples grown under the fixed oxygen pressure of 2.7 Pa."

For more information on this research see: The shift of optical band gap in W-doped ZnO with oxygen pressure and doping level. Materials Research Bulletin, 2014;54():73-77. Materials Research Bulletin can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier -; Materials Research Bulletin -

Our news journalists report that additional information may be obtained by contacting J. Chu, Chinese Academy Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, People's Republic of China. Additional authors for this research include X.Y. Peng, K. Dasari, R. Palai and P. Peng (see also Chalcogens).

Keywords for this news article include: Asia, Chongqing, Chalcogens, People's Republic of China

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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