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Exploration Of Efficient Scintillation Based On Inas Quantum Dots In A Gaas Matrix, Katherine Rose Dropiewski
Exploration Of Efficient Scintillation Based On Inas Quantum Dots In A Gaas Matrix, Katherine Rose Dropiewski
Legacy Theses & Dissertations (2009 - 2024)
Scintillation and optical properties of an integrated InAs/GaAs Quantum Dot (QD) Scintillation Detector were investigated to improve efficiency and reduce the decay time of luminescence. The photoluminescent properties of InAs QDs embedded in a GaAs matrix were studied as-grown by molecular beam epitaxy (MBE) on GaAs substrates, and on foreign substrates fabricated as thick (10-25 μm) waveguides. The luminescent efficiency of QDs as-grown on GaAs substrates were examined using photoluminescence (PL) measurements at room temperature and the thermal quenching of PL was analyzed by comparing the integrated PL intensities at 77K-400K. PL measurements were used to optimize QD AlAs capping, …