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Low Temperature CVD of Thin, Amorphous Boron-Carbon Films for Neutron Detectors
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7171-5383
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.
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2012 (English)In: Chemical Vapor Deposition, ISSN 0948-1907, E-ISSN 1521-3862, Vol. 18, no 7-9, 221-224 p.Article in journal (Refereed) Published
Abstract [en]

Thin, amorphous boron-carbon films are deposited at low temperature (400600?degrees C) by thermally activated CVD using the organoborane triethylboron (TEB) as a single precursor. Two different carrier gases are tested. At 600?degrees C, using argon as the carrier gas, the deposition rate is close to 1?mu m h-1. The film has a density of 2.14?g?cm-3 with a B/C ratio of 3.7. When hydrogen is used as the carrier gas, the film density is 2.42?g?cm-3, the B/C ratio 4.6, and the deposition rate 0.35?mu m h-1. The hydrogen content in the films is about 34 at.-%, regardless of ambient conditions during deposition, and varies only with the deposition temperature. In addition, both the film composition and the film density are found to vary significantly with the deposition temperature and the atmospheric conditions. Based upon these results, a deposition mechanism for the growth of boron-carbon films from TEB, where the TEB molecule is decomposed to BH3 and hydrocarbons, is suggested.

Place, publisher, year, edition, pages
Wiley-VCH Verlag Berlin , 2012. Vol. 18, no 7-9, 221-224 p.
Keyword [en]
Boron-carbon films, Elastic recoil detection analysis (ERDA), Low temperature CVD, Neutron detection, Organoborane
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-84903DOI: 10.1002/cvde.201206980ISI: 000308400900009OAI: oai:DiVA.org:liu-84903DiVA: diva2:562916
Available from: 2012-10-26 Created: 2012-10-26 Last updated: 2017-12-07

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Pedersen, HenrikHöglund, CarinaBirch, JensJensen, JensHenry, Anne

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