Relation between intercalated oxygen molecules and localized electronic states in C60 films with/without laser light irradiation

Hitoe Habuchi; Shoji Nitta; Hiroki Maehara; Shuichi Nonomura

doi:10.1117/12.279248

1 November 1997 Relation between intercalated oxygen molecules and localized electronic states in C₆₀ films with/without laser light irradiation

Hitoe Habuchi, Shoji Nitta, Hiroki Maehara, Shuichi Nonomura

Author Affiliations +

Proceedings Volume 3142, Fullerenes and Photonics IV; (1997) https://doi.org/10.1117/12.279248
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Localized electronic stats in C₆₀ films related to intercalated oxygen molecules (O₂) are studied by means of photoluminescence, electron spin resonance, constant photocurrent method and photothermal deflection spectroscopy. O₂ intercalated into C₆₀ films creates localized electronic states in subband gap below the energy of 1.6 eV. These states act as the non-radiative recombination center and the trap level for conduction carriers. Localized electronic stats photo-induced at room temperature are also found in C₆₀ films exposed to air. These states can be related to photo-oxidation of C₆₀ but gradually decrease at room temperature without the exposure to light. On the other hand, localized electronic states in oxygen free C₆₀ films decrease with the laser light irradiation. In this paper, localized electronic states in C₆₀ films with/without the laser light irradiation will be discussed with relating to intercalated O₂.

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Hitoe Habuchi, Shoji Nitta, Hiroki Maehara, and Shuichi Nonomura "Relation between intercalated oxygen molecules and localized electronic states in C₆₀ films with/without laser light irradiation", Proc. SPIE 3142, Fullerenes and Photonics IV, (1 November 1997); https://doi.org/10.1117/12.279248

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