Acuminated fluorescence of Er3 + centres in endohedral fullerenes through the incarceration of a carbide cluster

Journal article

Photoluminescence spectroscopic measurements have allowed the acquisition of high resolution spectra at low temperature for the endohedral metallofullerenes, Er2 @ C82 (isomer I) and Er2 C2 @ C82 (isomer I). The characteristic emission in the 1.5-1.6 μm region corresponds to the 4 I13 / 2 (m) → 4 I15 / 2 (n) transitions of the Er3 + ion for both molecules. The emission arising from Er2 C2 @ C82 (I) appears acuminated (narrow lines that taper to a point) when compared with that of Er2 @ C82 (I). The Er2 C2 @ C82 (I) emission linewidths are comparable to those found in crystals, making this molecule of interest for applications where accessible, well-defined quantum states are required. © 2009 Elsevier B.V. All rights reserved.

Authors: Plant, SR; Dantelle, G; Ito, Y; Ng, T; Ardavan, A

• Journal: Chemical Physics Letters
• Volume: 476
• Issue: 1-3
• Pages: 41-45
• Publication date: 2009-07-07
• DOI: 10.1016/j.cplett.2009.05.042
• ISSN: 0009-2614
• Language: English