Reactive chemistry of C(2)H(x) species on CVD diamond
The reactive chemistry of ethyl species on the diamond surface in the presence atomic H/D has been studied. At low H surface concentrations, a thermally driven pathway converts mono-bonded ethyl into di-bonded ethylene on the surface, leading to decomposition to adsorbed carbon. In the presence of s...
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| Format: | Conference item |
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1998
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| _version_ | 1797080646621855744 |
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| author | Loh, K Foord, J Jackman, R |
| author_facet | Loh, K Foord, J Jackman, R |
| author_sort | Loh, K |
| collection | OXFORD |
| description | The reactive chemistry of ethyl species on the diamond surface in the presence atomic H/D has been studied. At low H surface concentrations, a thermally driven pathway converts mono-bonded ethyl into di-bonded ethylene on the surface, leading to decomposition to adsorbed carbon. In the presence of surface H, this pathway is largely blocked leading to spontaneous desorption as ethene after β-elimination at 750 K. The adsorbed ethyl radical is kinetically unstable when irradiated with atomic D and undergoes spontaneous desorption as ethene and ethane. We conclude from the results that adsorbed ethyl species are too unstable to be able to contribute effectively to diamond growth, but they could play a role in diamond etching. © 1998 Published by Elsevier Science S.A. |
| first_indexed | 2024-03-07T01:03:04Z |
| format | Conference item |
| id | oxford-uuid:8a6121f1-c282-46a8-8d21-713d70b09b42 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:03:04Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | oxford-uuid:8a6121f1-c282-46a8-8d21-713d70b09b422022-03-26T22:31:06ZReactive chemistry of C(2)H(x) species on CVD diamondConference itemhttp://purl.org/coar/resource_type/c_5794uuid:8a6121f1-c282-46a8-8d21-713d70b09b42Symplectic Elements at Oxford1998Loh, KFoord, JJackman, RThe reactive chemistry of ethyl species on the diamond surface in the presence atomic H/D has been studied. At low H surface concentrations, a thermally driven pathway converts mono-bonded ethyl into di-bonded ethylene on the surface, leading to decomposition to adsorbed carbon. In the presence of surface H, this pathway is largely blocked leading to spontaneous desorption as ethene after β-elimination at 750 K. The adsorbed ethyl radical is kinetically unstable when irradiated with atomic D and undergoes spontaneous desorption as ethene and ethane. We conclude from the results that adsorbed ethyl species are too unstable to be able to contribute effectively to diamond growth, but they could play a role in diamond etching. © 1998 Published by Elsevier Science S.A. |
| spellingShingle | Loh, K Foord, J Jackman, R Reactive chemistry of C(2)H(x) species on CVD diamond |
| title | Reactive chemistry of C(2)H(x) species on CVD diamond |
| title_full | Reactive chemistry of C(2)H(x) species on CVD diamond |
| title_fullStr | Reactive chemistry of C(2)H(x) species on CVD diamond |
| title_full_unstemmed | Reactive chemistry of C(2)H(x) species on CVD diamond |
| title_short | Reactive chemistry of C(2)H(x) species on CVD diamond |
| title_sort | reactive chemistry of c 2 h x species on cvd diamond |
| work_keys_str_mv | AT lohk reactivechemistryofc2hxspeciesoncvddiamond AT foordj reactivechemistryofc2hxspeciesoncvddiamond AT jackmanr reactivechemistryofc2hxspeciesoncvddiamond |