The results of photoluminescence ~PL!, detection-energy-dependent photoluminescence excitation ~DEDPLE!, excitation-energy-dependent photoluminescence ~EEDPL!, and strain state analysis ~SSA! of three InGaN/GaN quantum-well ~QW! samples with silicon dopin The results of photoluminescence ~PL!, detection-energy-dependent photoluminescence excitation ~DEDPLE!, excitation-energy-dependent photoluminescence ~EEDPL!, and strain state analysis ~SSA! of three InGaN/GaN quantum-well ~QW! samples with silicon dopin