Excited states of the free excitons in CuInSe2 single crystals

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Yakushev, M. V. and Luckert, F. and Faugeras, C. and Karotki, A. V. and Mudryi, A. V. and Martin, R. W. (2010) Excited states of the free excitons in CuInSe2 single crystals. Applied Physics Letters, 97 (15). 152110. ISSN 0003-6951 (https://doi.org/10.1063/1.3502603)

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Abstract

High-quality CuInSe2 single crystals were studied using polarization resolved photoluminescence (PL) and magnetophotoluminescence (MPL). The emission lines related to the first (n=2) excited states for the A and B free excitons were observed in the PL and MPL spectra at 1.0481 meV and 1.0516 meV, respectively. The spectral positions of these lines were used to estimate accurate values for the A and B exciton binding energies (8.5 meV and 8.4 meV, respectively), Bohr radii (7.5 nm), band gaps (E-g(A)=1.050 eV and E-g(B)=1.054 eV), and the static dielectric constant (11.3) assuming the hydrogenic model.

ORCID iDs

Yakushev, M. V., Luckert, F., Faugeras, C., Karotki, A. V., Mudryi, A. V. and Martin, R. W. ORCID logoORCID: https://orcid.org/0000-0002-6119-764X;
  • Item type:Article
    ID code:29008
    Dates:
    Date
    Event
    11 October 2010
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:07 Mar 2011 23:22
    Last modified:11 Nov 2024 09:39
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/29008
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