English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Ultranonocrystalline diamond/hydrogenated amorphous carbon composite thinfilms consist of three different components; ultrananocrystalline diamondcrystallites, hydrogenated amorphous carbon, and grain boundaries between them.Since grain boundaries contain a lot of dangling bonds and unsaturated bonds,they would be a cause of carrier trap center degrading device performance inpossible applications such as UV photo-detectors. We experimentally demonstratehydrogen atoms preferentially incorporate at grain boundaries and terminatedangling bonds by means of several spectroscopic techniques. XPS measurementscannot detect quantitative transitions of sp^2- and sp^3-hybridized carbons inthe films, resulting in 55-59 % of sp^3 contents. On the other hand, FT-IR andNEXAFS exhibit some variations of the amounts of certain carbon hybridizationfor sure. The former confirms the transformation from sp^2 to sp^3 hydrocarbonsby ~10 % by additional hydrogenation, and the latter represents chemicalconfiguration changes from {\pi}* C{\equiv}C and {\pi}* C=C to {\sigma}* C-H.These results can be an evidence of localized hydrogen at grain boundaries,which plays a part in terminating dangling bonds and unsaturated bonds, andthey are correlated with the optical and electrical properties of the filmsinvestigated in some previous research. Our spectroscopic studies on thehydrogenation effects combined with the discussion on the optical andelectrical characteristics confirm that the hydrogenation can be an effectivetool of an enhancement of photovoltaic performance in the above sensingapplications.

journal of vacuum science and technology. b, nanotechnology and microelectronics

Evidence of hydrogen termination at grain boundaries in  ultrananocrystalline diamond/hydrogenated amorphous carbon composite thin  films synthesized via coaxial arc plasma