Temperature Dependences of Optical Energy Gaps of SbSI@CNT and SbSeI@CNT

• Authors: M. Jesionek , M. Nowak , M. Kępińska , I. Bednarczyk
• Languages of publication: EN

Abstracts

EN

This paper presents for the first time temperature dependences of optical energy gaps of SbSI@CNT and SbSeI@CNT, i.e. carbon nanotubes (CNTs) filled with antimony sulfoiodide (SbSI) and antimony selenoiodide (SbSeI). The heterostructures were prepared sonochemically using CNTs and elemental Sb, S or Se and I in the presence of solvent under ultrasonic irradiation. Spectral characteristics of diffusive transmittance and reflectance of SbSI@CNT and SbSeI@CNT were measured in temperature range 274 K < T < 333 K. The determinal temperature dependence of indirect forbidden optical energy gap of SbSI@CNT has been fitted with E_{gIf} (T) = (1.92(2)-3.6(6) × 10^{-4} × T) eV. Indirect allowed optical energy gap of SbSeI@CNT has been fitted with E_{gIa} (T) = (1.817(5)-7.1(2) × 10^{-4} × T) eV.

Keywords

EN

78.67.Ch; 62.23.Hj; 78.67.Uh; 81.07.Gf

Discipline

• 81.07.Gf: Nanowires
• 62.23.Hj: Nanowires
• 78.67.Uh: Nanowires
• 78.67.Ch: Nanotubes

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 5
• Pages: 836-837

Dates

published

2013-11

Contributors

author

M. Jesionek

• Solid State Physics Section, Institute of Physics, Silesian University of Technology, Z. Krasińskiego 8, 40-019 Katowice, Poland

author

M. Nowak

• Solid State Physics Section, Institute of Physics, Silesian University of Technology, Z. Krasińskiego 8, 40-019 Katowice, Poland

author

M. Kępińska

• Solid State Physics Section, Institute of Physics, Silesian University of Technology, Z. Krasińskiego 8, 40-019 Katowice, Poland

author

I. Bednarczyk

• Faculty of Materials Science, Silesian University of Technology, Z. Krasińskiego 8, 40-019 Katowice, Poland

References

• [1] M. Nowak, M. Jesionek, P. Szperlich, J. Szala, T. Rzychoń, D. Stróż, Ultrason. Sonochem. 16, 800 (2009)
• [2] M. Jesionek, M. Nowak, P. Szperlich, D. Stróż, J. Szala, K. Jesionek, T. Rzychoń, Ultrason. Sonochem. 19, 179 (2012)
• [3] M. Nowak, P. Szperlich, Ł. Bober, J. Szala, G. Moskal, D. Stróż, Ultrason. Sonochem. 15, 709 (2008)
• [4] M. Nowak, B. Kauch, P. Szperlich, M. Jesionek, M. Kępińska, Ł. Bober, J. Szala, G. Moskal, T. Rzychoń, D. Stróż, Ultrason. Sonochem. 16, 546 (2009)
• [5] W.-F. Cheong, S.A. Prahl, A.J. Welch, IEEE J. Quantum. Electron. 26, 2166 (1990)
• [6] M. Nowak, B. Kauch, P. Szperlich, Rev. Sci. Instrum. 80, 046107 (2009)

Identifiers

DOI

10.12693/APhysPolA.124.836