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Optical properties and carrier dynamics of self-assembled GaN/AlGaN quantum dots

Optical properties and carrier dynamics of self-assembled GaN/AlGaN quantum dots. Nanotechnology 17 (2006) 2609-2613. Ashida lab. Nawaki Yohei. Contents. Gallium Nitride Quantum dots Fabrication of quantum dots Growth regime of Self-assembled QDs Fabricated sample

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Variation of PL with temperature and doping

With increase in temperature: Lattice spacing increases so bandgap reduces, peak shift to higher wavelength Full width at half maximum increases due to increased lattice vibrations Peak intensity usually reduces As doping increases PL peak blueshifts due to band filling

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Optical properties and carrier dynamics of self-assembled GaN/AlGaN quantum dots

Variation of PL with temperature and doping