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Formation and Nature of InGaN Quantum Dots in GaN Nanowires

Author:
Deshpande, Saniya  Frost, Thomas  Yan, Lifan  Jahangir, Shafat  Hazari, Arnab  Liu, Xianhe  Mirecki-Millunchick, Joanna  Mi, Zetian  Bhattacharya, Pallab  


Journal:
NANO LETTERS


Issue Date:
2015


Abstract(summary):

InGaN/GaN disk-in-nanowire heterostructures on silicon substrates have emerged as Important gain media for the realization of visible light sources. The nature of quantum confinement in the disks is largely unknown. From the unique nature of the Measured temperature dependence of the radiative lifetime and direct transmission electron microscopy, it is evident that such self-organized islands (disks) behave as quantum dots. This is confirmed by the observation of single photon emission from a single disk-in-nano-wire and the presence of a sharp minimum in the line width enhancement factor of edge emitting lasers having the InGaN disks as the gain media.


Page:
1647---1653


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