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The effect of band-tail states on the thermal stability of the infrared stimulated luminescence from K-feldspar

Journal Article


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Abstract


  • The thermal stability of the infrared stimulated luminescence (IRSL) signal from a sedimentary K-feldspar was investigated using isothermal decay study. It is observed that the isothermal decay of IRSL signal cannot be described using a first-order exponential decay function. Instead, the decay can be well described by considering the presence of band-tail states. Based on the isothermal decay results, a trap depth of ∼1.92 eV was obtained for the IRSL stimulated at 50 °C and the width of the band-tail states was found to be ∼0.37 eV below the conduction band edge. Deeper trap depths (up to ∼2.06 eV) were obtained for multi-elevated-temperature post-IR IRSL (MET-pIRIR) at elevated temperatures. Based on these observations, the implication for the IRSL dating feldspar was discussed.

UOW Authors


  •   Li, Bo
  •   Li, Sheng-Hua (external author)

Publication Date


  • 2013

Citation


  • Li, B. & Li, S. (2013). The effect of band-tail states on the thermal stability of the infrared stimulated luminescence from K-feldspar. Journal of Luminescence, 136 5-10.

Scopus Eid


  • 2-s2.0-84870373419

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1261&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/262

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5

End Page


  • 10

Volume


  • 136

Place Of Publication


  • Netherlands

Abstract


  • The thermal stability of the infrared stimulated luminescence (IRSL) signal from a sedimentary K-feldspar was investigated using isothermal decay study. It is observed that the isothermal decay of IRSL signal cannot be described using a first-order exponential decay function. Instead, the decay can be well described by considering the presence of band-tail states. Based on the isothermal decay results, a trap depth of ∼1.92 eV was obtained for the IRSL stimulated at 50 °C and the width of the band-tail states was found to be ∼0.37 eV below the conduction band edge. Deeper trap depths (up to ∼2.06 eV) were obtained for multi-elevated-temperature post-IR IRSL (MET-pIRIR) at elevated temperatures. Based on these observations, the implication for the IRSL dating feldspar was discussed.

UOW Authors


  •   Li, Bo
  •   Li, Sheng-Hua (external author)

Publication Date


  • 2013

Citation


  • Li, B. & Li, S. (2013). The effect of band-tail states on the thermal stability of the infrared stimulated luminescence from K-feldspar. Journal of Luminescence, 136 5-10.

Scopus Eid


  • 2-s2.0-84870373419

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1261&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/262

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5

End Page


  • 10

Volume


  • 136

Place Of Publication


  • Netherlands