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Data on Hydrogen Described by Researchers at Xiamen University (Combined effects of hydrogen annealing on morphological, electrical and structural...

July 11, 2014



Data on Hydrogen Described by Researchers at Xiamen University (Combined effects of hydrogen annealing on morphological, electrical and structural properties of graphene/r-sapphire)

By a News Reporter-Staff News Editor at Science Letter -- Research findings on Hydrogen are discussed in a new report. According to news reporting originating from Xiamen, People's Republic of China, by NewsRx correspondents, research stated, "We proposed a comprehensive study on the combined effects of hydrogen thermal annealing process on the morphological, structural and electrical properties of graphene transferred on r-plane sapphire (1-102). We found that although thermal annealing can remove the polymeric residues, unintentional p-type doping of polymeric residues and structural breakages arise simultaneously with the in-plane tensile strain."

Our news editors obtained a quote from the research from Xiamen University, "Also, the forming mechanism of cracks and p-type doping effect were investigated through Raman spectroscopy, atomic force microscopy, non-contact Hall and high resolution X-ray photo-electron spectroscopy. It revealed thermal annealing process has a combined influence on the performance of the hydrogen annealed samples with a critical point, which was similar to 250 degrees C in this work. When the annealing temperature was over the critical point, significant p-type doping effects were included in a dominant position because of graphene with in-plane strain."

According to the news editors, the research concluded: "The results can be important for the fabrication or chemical processing of graphene-based materials and devices."

For more information on this research see: Combined effects of hydrogen annealing on morphological, electrical and structural properties of graphene/r-sapphire. Carbon, 2014;75():262-270. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)

The news editors report that additional information may be obtained by contacting J. Ning, Xiamen University, Dept. of Phys, Lab Nanoscale Condense Matter Phys, Xiamen 361005, People's Republic of China. Additional authors for this research include D. Wang, J.D. Yan, D. Han, Z. Chai, W.W. Cai, J.C. Zhang and Y. Hao (see also Hydrogen).

Keywords for this news article include: Asia, Gases, Xiamen, Elements, Hydrogen, Inorganic Chemicals, 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: Science Letter


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