Configuration-selective spectroscopic studies of Er3+ centers in ErSc2N@C80 and Er2ScN@C80 fullerenes.

Journal article

Low temperature photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy of high purity ErSc(2)N@C(80) and Er(2)ScN@C(80) fullerenes reveal at least two metastable configurations of the Er(3+) ion within the cage, consistent with previous observations from x-ray diffraction. Using PLE measurements at a number of different emission wavelengths we have characterized the ground state, (4)I(152), and the first excited state, (4)I(132), of the various Er(3+) configurations and their crystal-field splitting. We present detailed energy level diagrams for the ground and excited states of the two dominant configurations of ErSc(2)N@C(80) and Er(2)ScN@C(80).

Authors: Tiwari, A; Dantelle, G; Porfyrakis, K; Taylor, R; Watt, A

• Publication status: Published
• Journal: Journal of chemical physics
• Volume: 127
• Issue: 19
• Pages: 194504
• Publication date: 2007-11-01
• DOI: 10.1063/1.2805083
• EISSN: 1089-7690
• ISSN: 0021-9606
• Language: English