Journal article
Authors list: Wagner, M; Dirnstorfer, I; Hofmann, DM; Lampert, MD; Karg, F; Meyer, BK
Publication year: 1998
Pages: 131-142
Journal: physica status solidi (a) – applications and materials science
Volume number: 167
Issue number: 1
ISSN: 0031-8965
Publisher: Wiley
Abstract:
Cu-rich and nearly stoichiometric CuIn(Ga)Se-2 thin films prepared by the rapid thermal process (RTP) are investigated by electrical and optical methods. The experiments yield that three phases are present in the layers. Cu2-xSe, which determines the conductivity of the layers but does not contribute to the radiative recombinations is observed. CuIn1-xGaxSe2 causes a broad unstructured radiative recombination with a peak energy in the range from 1.0 to 1.1 eV, dependent on x. Recombinations with zero-phonon lines at 0.96 and 0.90 eV arise from CuInSe2. They involve a shallow donor with a binding energy of (10 +/- 5) meV and two accepters with binding energies of (75 +/- 10) meV and (140 +/- 10) meV, respectively. All features of these recombinations are well described in the donor-acceptor pair recombination model.
Citation Styles
Keywords
CUINSE2; FUNDAMENTAL ABSORPTION-EDGE