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High‐Purity Er3N@C80 Films: Morphology, Spectroscopic Characterization, and Thermal Stability

Weippert, Jürgen; Ulaş, Seyithan; Meyer, Patrick Per; Strelnikov, Dmitry V.; Böttcher, Artur

Abstract (englisch):
Films comprising the endohedral fullerene Er3N@C80 are deposited onto highly
oriented pyrolytic graphite (HOPG) substrates in high purity enabled by performing
mass-selected low-energy deposition from a cation beam. In the initial
stage, the growth on HOPG is dominated by spontaneous nucleation of small 2D
islands both on intact terraces as well as the step edges. The island growth
exhibits strong differences from lms comprising other fullerenes grown by the
same method. This behavior can be explained by the surface-diffusion-mediated
nucleation model presented in previous work: Dominant components in the
behavioural differences are a high intercage dispersion interaction and a lower
kinetic energy of cages migrating on the surface in comparison with previously
deposited materials. When annealed, the lms undergo several competing
processes: A small fraction desorbs in the temperature range 700–800 K, another
fraction forms covalent intercage bonds instead of the previous purely dispersive
bonding mode, and a third fraction probably decomposes to small fragments.

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Verlagsausgabe §
DOI: 10.5445/IR/1000130536
Veröffentlicht am 15.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0370-1972, 1521-3951
KITopen-ID: 1000130536
Erschienen in Physica status solidi / B
Verlag Wiley
Seiten 2000546
Vorab online veröffentlicht am 12.03.2021
Nachgewiesen in Scopus
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