Hostname: page-component-848d4c4894-nmvwc Total loading time: 0 Render date: 2024-06-25T15:51:05.509Z Has data issue: false hasContentIssue false
  • English
  • Français

Detecting sp2-bonded carbon in diamond using optically detected X-ray absorption spectroscopy

Published online by Cambridge University Press:  18 January 2011

G. O. Jones ,
O. R. Roberts ,
G. T. Williams ,
D. P. Langstaff ,
N. R. J. Poolton ,
P. Martineau ,
D. Fisher ,
S. Lawson  and
D. A. Evans
G. O. Jones*
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
O. R. Roberts
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
G. T. Williams
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
D. P. Langstaff
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
N. R. J. Poolton
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
P. Martineau
Affiliation:
DTC Research Centre, Maidenhead, SL6 6JW, UK
D. Fisher
Affiliation:
DTC Research Centre, Maidenhead, SL6 6JW, UK
S. Lawson
Affiliation:
DTC Research Centre, Maidenhead, SL6 6JW, UK
D. A. Evans
Affiliation:
Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth, SY23 3BZ, UK
*
†Email address for correspondence: gzj@aber.ac.uk
Get access

Abstract

Optically detected X-ray absorption spectroscopy (ODXAS) and X-ray excited optical luminescence (XEOL) have been applied in parallel to the study of local bonding in luminescent diamonds. Imaging ODXAS and XEOL reveal correlations between lateral variation in colour (transmitted light and luminescence) and local carbon bonding in selected samples showing strong optical absorption contrast. Dark regions of the crystals viewed in transmitted light correlate with a lower total luminescence yield when excited with soft X-rays of photon energy ~280 eV. ODXAS reveals a higher proportion of sp2-bonded carbon species in darker (less luminescent) regions associated with graphitic micro-inclusions.

Type
Poster paper
Information
Diamond Light Source Proceedings , Volume 1 , Issue SRMS-7 , October 2010 , e131
Copyright
Copyright © Diamond Light Source Ltd 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Evans, D. A., Vearey-Roberts, A. R. & Poolton, N. R. J. 2006 Locating hexagonal and cubic phases in boron nitride using wavelength-selective optically detected x-ray absorption spectroscopy. Appl. Phys. Lett. 89, 161107.CrossRefGoogle Scholar
Poolton, N. R. J., Towlson, B. M., Hamilton, B., Evans, D. A. 2006 New instrumentation for micro-imaging X-ray absorption spectroscopy using optical detection methods. Nucl. Instrum. Methods B 246, 445.CrossRefGoogle Scholar