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(a) The PL spectra at different pressures and N-related bound exciton emission peaks denoted as . (b) The corresponding pressure dependences of the PL peak positions. The solid lines are the linear fits to the experimental data. The pressure dependence of (the dash line) and alloy band gap (the dotted line) are taken from Ref. 1.
(a) Decay curves of for at under ambient pressure. The inset lists the corresponding lifetimes. (b) Decay curves of and (c) under different pressures at . Their pressures and lifetimes are denoted on the left and right of the decay curves, respectively.
The lifetime vs the binding energy for and . The lifetimes of and at are connected by the dot line. The open square denotes the lifetime of at .
The binding energies and the corresponding PL decay times at different pressures.
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