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RHEED patterns at the growth end of well layers and RT-PL spectra of (a) and (b) 3QWs.
Measured (004) x-ray rocking curves of the 3QWs: (a) , (b) , and (c) .
RT-PL spectra of the 3QWs at excitation power of . (a) , (b) , and (c) .
High-resolution cross-sectional TEM image taken from QWs sample. There is no dislocation found.
(a) Temperature dependence of PL peak energy for sample S20C measured at 5 and excitations. (b) FWHM evolution of PL for sample S20C measured at . Inset of (a) shows the e1-hh1 transitions for sample S20C at .
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