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Ammonia chemisorption on gallium arsenide clusters

Wang, Lihong and Chibante, L. P. F. and Tittel, F. K. and Curl, R. F. and Smalley, R. E. (1990) Ammonia chemisorption on gallium arsenide clusters. Chemical Physics Letters, 172 (5). pp. 335-340. ISSN 0009-2614. https://resolver.caltech.edu/CaltechAUTHORS:20170314-102731033

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Abstract

Gallium arsenide clusters in the 6–16-atom size range were generated by laser vaporization in a supersonic nozzle and trapped as positive ions in Fourier transform ion-cyclotron resonance mass spectrometer. Measurements of the rate of attachment of ammonia revealed that all clusters larger than seven atoms were most reactive near the 11 composition ratio of gallium/arsenic. The results suggest that even at this small size the clusters begin to adopt the alternating gallium—arsenic bonding arrangement characteristic of bulk GaAs crystal surfaces where gallium—arsenic bonding activates gallium atoms for ammonia chemisorption.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/S0009-2614(90)87123-9DOIArticle
http://www.sciencedirect.com/science/article/pii/S0009261490871239?via%3DihubPublisherArticle
ORCID:
AuthorORCID
Wang, Lihong0000-0001-9783-4383
Additional Information:© 1990 Elsevier B.V. Received 30 April 1990, Revised 20 June 1990. This research was supported by the US Army Research Office and the Robert A. Welch Foundation, and used a cluster ET-ICR apparatus supported for general semiconductor cluster research by the Office of Naval Research, for bare metal cluster research by the US Department of Energy, and for chemisorbed cluster research by the National Science Foundation.
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Robert A. Welch FoundationUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Issue or Number:5
Record Number:CaltechAUTHORS:20170314-102731033
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170314-102731033
Official Citation:Lihong Wang, L.P.F. Chibante, F.K. Tittel, R.F. Curl, R.E. Smalley, Ammonia chemisorption on gallium arsenide clusters, Chemical Physics Letters, Volume 172, Issue 5, 1990, Pages 335-340, ISSN 0009-2614, http://dx.doi.org/10.1016/S0009-2614(90)87123-9. (http://www.sciencedirect.com/science/article/pii/S0009261490871239)
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ID Code:75090
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Mar 2017 17:49
Last Modified:03 Oct 2019 16:46

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