Luminescence from β-Irradiated Graphene Layers

• Authors: A. Chruścińska , K. Przegiętka , P. Szroeder , H. Oczkowski , F. Rozpłoch
• Languages of publication: EN

Abstracts

EN

We found that β-irradiated samples of crystallite graphite and multi-walled carbon nanotubes emit light during heating above room temperature. This behaviour is rather surprising for semimetals. Due to the lack of deep enough energy gap, this optical emission cannot be associated with interband transitions, as it is usually assumed in a thermally stimulated luminescence model. We suppose that the reported accumulated luminescence is the result of thermally stimulated relaxation of some kind of defects created in graphene structures by ionising radiation and therefore we offer to name it the relaxoluminescence. We anticipate the relaxoluminescence to be a starting point for developing a new spectroscopic method for nanotechnology. It can also throw a new light on the nature of defects, which are suspected of being responsible for strange magnetic effects in carbon.

Keywords

EN

77.60.Kn; 78.60.-b; 78.67.Ch; 81.05.Uw

Discipline

• 78.60.-b: Other luminescence and radiative recombination
• 78.67.Ch: Nanotubes

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 1
• Pages: 71-80

Dates

published

2006-07

received

2006-02-16

(unknown)

2006-05-04

Contributors

author

A. Chruścińska

• Institute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

author

K. Przegiętka

• Institute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

author

P. Szroeder

• Institute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

author

H. Oczkowski

• Institute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

author

F. Rozpłoch

• Institute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

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Identifiers

DOI

10.12693/APhysPolA.110.71