Photoinduced transformation of luminescence centers in C60 crystals at high pressure

Autor: K. P. Meletov, V. D. Negrii
Rok vydání: 1999
Předmět:
Zdroj: Journal of Experimental and Theoretical Physics Letters. 70:801-806
ISSN: 1090-6487
0021-3640
DOI: 10.1134/1.568234
Popis: The influence of laser irradiation on the photoluminescence spectra of perfect C60 crystals in the orientationally disordered phase is investigated. It is shown that irradiation of the crystals with low-power light for short durations at T=200 K produces radical changes in the luminescence spectrum. The pressure dependences of the spectral bands of the phototransformed and initial (without irradiation) spectra differ significantly, indicating a photoinduced structural transformation of the X centers responsible for the luminescence of C60. The phototransformed C60 crystals are stable against further exposure to light irradiation and pressure.
Databáze: OpenAIRE