✦ LIBER ✦

Phosphorescence of C60 at 1.2 K

✍ Scribed by D.J. van den Heuvel; I.Y. Chan; E.J.J. Groenen; J. Schmidt; G. Meijer

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 759 KB
Volume: 231
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)01223-7

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✦ Synopsis

Phosphorescence has been observed at 1.2 K both for ChO dissolved in a decaline/cyclohexane glass and for single crystals of C6,,. The phosphorescence spectrum of CsO in the glass reveals a weak origin at 798.1+ 0.5 nm, while most of the intensity shows up in vibronic transitions. The phosphorescence of crystalline C6,, consists of two parts. One of these, with the origin of its phosphorescence spectrum at 826 nm, derives probably from a shallow CSO X-trap although an excitonic origin cannot be excluded. The other, with the origin of its phosphorescence spectrum at 862 nm, originates from triplet states previously recognized by magnetic resonance experiments. These concern excitations delocalized over pairs of C& molecules, so-called mini-excitons that are deep X-traps in the Cao crystal.

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