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- W1665619128 abstract "We have investigated photoluminescence (PL) properties under high-density-excitation conditions at 10 K in a GaAs1−xNx thin film (x=0.008) with a narrow band-gap energy of 1.34 eV. A PL band was observed with a threshold-like nature, and its intensity was found to exhibit quadratic dependence on the excitation power. At the threshold excitation power, the PL-peak energy is lower than the energy of the fundamental exciton by the magnitude of the exciton binding energy that is ∼4 meV. The results described above indicate that the PL band originates from exciton-exciton scattering, the so-called P emission, which is typically observed in wide-gap semiconductors with large exciton binding energies. Furthermore, we have confirmed the existence of optical gain in the energy region of the P band using a variable-stripe-length method." @default.
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- W1665619128 date "2010-02-22" @default.
- W1665619128 modified "2023-09-26" @default.
- W1665619128 title "Photoluminescence from exciton-exciton scattering in a GaAs1−xNx thin film" @default.
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- W1665619128 doi "https://doi.org/10.1063/1.3309695" @default.
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