Landau levels of the C-exciton in CuInSe2 studied by magneto-transmission

M. V. Yakushev; A. V. Rodina; G. M. Shuchalin; R. P. Seisian; M. A. Abdullaev; A. Rockett; V. D. Zhivulko; A. V. Mudryi; C. Faugeras; R. W. Martin

doi:10.1063/1.4897995

Landau levels of the C-exciton in CuInSe₂ studied by magneto-transmission

M. V. Yakushev, A. V. Rodina, G. M. Shuchalin, R. P. Seisian, M. A. Abdullaev, A. Rockett, V. D. Zhivulko, A. V. Mudryi, C. Faugeras, R. W. Martin

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The electronic structure of the solar cell absorber CuInSe₂ is studied using magneto-transmission in thin polycrystalline films at magnetic fields up to 29 T. A, B, and C free excitons are resolved in absorption spectra at zero field and a Landau level fan generated by diamagnetic exciton recombination is observed for fields above 7 T. The dependence of the C band exciton binding energy on magnetic fields, calculated using a hydrogenic approximation, is used to determine the C exciton Rydberg at 0 T (8.5 meV), band gap (1.2828 eV), and hole effective mass m_so = (0.31 ± 0.12)m₀ for the C valence sub-band.

Original language	English (US)
Article number	142103
Journal	Applied Physics Letters
Volume	105
Issue number	14
DOIs	https://doi.org/10.1063/1.4897995
State	Published - Oct 6 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4897995

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title = "Landau levels of the C-exciton in CuInSe2 studied by magneto-transmission",

abstract = "The electronic structure of the solar cell absorber CuInSe2 is studied using magneto-transmission in thin polycrystalline films at magnetic fields up to 29 T. A, B, and C free excitons are resolved in absorption spectra at zero field and a Landau level fan generated by diamagnetic exciton recombination is observed for fields above 7 T. The dependence of the C band exciton binding energy on magnetic fields, calculated using a hydrogenic approximation, is used to determine the C exciton Rydberg at 0 T (8.5 meV), band gap (1.2828 eV), and hole effective mass mso = (0.31 ± 0.12)m0 for the C valence sub-band.",

author = "Yakushev, {M. V.} and Rodina, {A. V.} and Shuchalin, {G. M.} and Seisian, {R. P.} and Abdullaev, {M. A.} and A. Rockett and Zhivulko, {V. D.} and Mudryi, {A. V.} and C. Faugeras and Martin, {R. W.}",

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language = "English (US)",

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T1 - Landau levels of the C-exciton in CuInSe2 studied by magneto-transmission

AU - Yakushev, M. V.

AU - Rodina, A. V.

AU - Shuchalin, G. M.

AU - Seisian, R. P.

AU - Abdullaev, M. A.

AU - Rockett, A.

AU - Zhivulko, V. D.

AU - Mudryi, A. V.

AU - Faugeras, C.

AU - Martin, R. W.

PY - 2014/10/6

Y1 - 2014/10/6

N2 - The electronic structure of the solar cell absorber CuInSe2 is studied using magneto-transmission in thin polycrystalline films at magnetic fields up to 29 T. A, B, and C free excitons are resolved in absorption spectra at zero field and a Landau level fan generated by diamagnetic exciton recombination is observed for fields above 7 T. The dependence of the C band exciton binding energy on magnetic fields, calculated using a hydrogenic approximation, is used to determine the C exciton Rydberg at 0 T (8.5 meV), band gap (1.2828 eV), and hole effective mass mso = (0.31 ± 0.12)m0 for the C valence sub-band.

AB - The electronic structure of the solar cell absorber CuInSe2 is studied using magneto-transmission in thin polycrystalline films at magnetic fields up to 29 T. A, B, and C free excitons are resolved in absorption spectra at zero field and a Landau level fan generated by diamagnetic exciton recombination is observed for fields above 7 T. The dependence of the C band exciton binding energy on magnetic fields, calculated using a hydrogenic approximation, is used to determine the C exciton Rydberg at 0 T (8.5 meV), band gap (1.2828 eV), and hole effective mass mso = (0.31 ± 0.12)m0 for the C valence sub-band.

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