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- W1982128512 abstract "In this paper, the radiative recombination in CuGaS2 thin films, deposited by metalorganic vapour phase epitaxy (MOVPE), is studied by photoluminescence (PL) spectroscopy. From PL studies of several series of layers grown under various growth conditions, a clear picture emerges of the radiative emission dominating for Cu-rich and Ga-rich layers. For near-stoichiometric layers, weak excitonic recombination at ∼ 2.48 eV and a donor–acceptor line at ∼ 2.4 eV are observed in the low temperature PL spectra. In Cu-rich layers, a donor–acceptor band at ∼ 2.18 eV dominates, while a band at ∼ 2.25 eV dominates for slightly Ga-rich material. For Ga-rich layers, deviations from the ideal Cu/Ga ratio of more than a few percent strongly quenches the emission above 2 eV in favour of a very broad band at ∼ 1.8 eV. The PL response is discussed within the context of fluctuating potentials in compensated material and compared to available reports in literature." @default.
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- W1982128512 date "2007-05-01" @default.
- W1982128512 modified "2023-09-25" @default.
- W1982128512 title "Defect chemistry in CuGaS2 thin films: A photoluminescence study" @default.
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- W1982128512 doi "https://doi.org/10.1016/j.tsf.2006.12.083" @default.
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