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Photoluminescence of (11–22) semipolar and (0001) polar InGaN/GaN quantum wells (QWs) was studied as a function of exciting laser intensity and hydrostatic pressure. A large photoluminescence energy shift with pressure (dEPL/dp) was observed in semipolar QWs comparing to polar ones. In addition, a negligible blue‐shift as a function of exciting laser intensity gives a strong argument for the absence...
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