Skip to main content Accessibility help

Optimization of Ce Content in CexLa1-xF3 Colloidal Nanocrystals for Gamma Radiation Detection

  • Nathan J Withers (a1), Krishnaprasad Sankar (a2), John B Plumley (a3), Brian A Akins (a4), Tosifa A Memon (a5), Antonio C Rivera (a6), Gennady Smolyakov (a7) and Marek Osiński (a8)...


We report on experimental investigations of CexLa1-xF3 colloidal nanocrystals (CNCs) and their properties in function of Ce content. The CNCs were characterized by TEM, energy-dispersive X-ray spectroscopy (EDS), steady-state UV-VIS optical absorption and photoluminescence (PL) spectroscopy, and by PL lifetime measurements. We also report on observations of scintillation from the cerium-doped lanthanum fluoride CNC material in experiments on radiation detection.



Hide All
1. Osiñski, M., Jovin, T. M. and Yamamoto, K. (Eds.), Colloidal Quantum Dots for Biomedical Applications III, San Jose, CA, 19-21 Jan. 2008, Proc. SPIE 6866.
2. Matsui, I.Nanoparticles for electronic device applications: A brief review”, J. Chem. Eng. Japan 38 (8), 535546 (2005).
3. Li, Y.-Q. Rizzo, A. Cingolani, R. and Gigli, G.White-light-emitting diodes using semiconductor nanocrystals”, Microchimica Acta 159 (3-4), 207215 (July 2007).
4. Chen, H. S. and Wang, S. J. J.White-light emission from organics-capped ZnSe quantum dots and application in white-light-emitting diodes”, Appl. Phys. Lett. 86, Art. 131905 (2005).
5. Michalet, X. Pinaud, F. Lacoste, T. D. Dahan, M. Bruchez, M. P. Alivisatos, A. P. and Weiss, S., “Properties of fluorescent semiconductor nanocrystals and their application to biological labeling”, Single Molecules 2 (4), 14385171 (2001).
6. Shim, M. and Guyot-Sionnest, P., “n-type colloidal semiconductor nanocrystals”, Nature 407, 981983 (2000).
7. Stouwdam, J. W. Hebbink, G. A. Huskens, J. and Veggel, F. C. J. M. van, “Lanthanidedoped nanoparticles with excellent luminescent properties in organic media”, Chem. Mater. 15 (24), 46044616 (2003).
8. Klink, S. I. Hebbink, G. A. Grave, L. Peters, F. G. A. Veggel, F. C. J. M. Van, Reinhoudt, D. N., and Hofstraat, J. W.Near-infrared and visible luminescence from terphenylbased lanthanide(III) complexes bearing amido and sulfonamido pendant arms”, Eur. J. Org. Chem. 10, 19231931 (2000).
9. Moses, W. W. and Derenzo, S. E.The scintillation properties of cerium-doped lanthanum fluoride”, Nucl. Instrum. Methods Phys. Res. A A299 (1-3), 5156 (1990).
10. Dai, S. Saengkerdsub, S. Im, H.-J., Stephan, A. C. and Mahurin, S. M. “Nanocrystalbased scintillators for radiation detection”, Unattended Radiation Sensor Systems for Remote Applications, 15-17 Apr. 2002, Washington, DC, AIP Conf. Proc. 632, pp. 220224, 2002.
11. Letant, S. E. and Wang, T.-F., “Study of porous glass doped with quantum dots or laser dyes under alpha irradiation”, Appl. Phys. Lett. 88 (10), Art. 103110, 8 March 2006.
12. Letant, S. E. and Wang, T. F.Semiconductor quantum dot scintillation under Á-ray irradiation”, Nano Lett. 6 (12), 28772880, 13 Dec. 2006.
13. Campbell, I. H. and Crone, B. K.Quantum-dot/organic semiconductor composites for radiation detection”, Adv. Mater. 18 (1), 7779 (2006).
14. McKigney, E. A. Sesto, R. E. Del, Jacobsohn, L. G. Santi, P. A. Muenchausen, R. E. Ott, K. C. McCleskey, T. M. Bennett, B. L. Smith, J. F. and Cooke, D. W.Nanocomposite scintillators for radiation detection and nuclear spectroscopy”, Nucl. Instrum. Methods Phys. Res. A 579 (1), 1518, 21 Aug. 2007.
15. Knoll, G. F. Radiation Detection and Measurement (John Wiley and Sons, New York, 2000), p. 219.
16. Wang, F. Zhang, Y. Fan, X. and Wang, M.One-pot synthesis of chitosan/LaF3:Eu3+ nanocrystals for bio-applications”, Nanotechnology 17, 15271532 (2006).
17. Stubicar, N. Zipper, P. and Cherney, B.Variety of aggregation and growth processes of lanthanum fluoride as a function of La/F activity ratio”, Crystal Growth & Design 5 (1), 123128 (2005).
18. Dorenbos, P.5d-level energies of Ce3+ and the crystalline environment. I. Fluoride compounds”, Phys. Rev. B 62 (23), 1564015649 (2000).



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed