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  • Title: Photoluminescence, thermal transport, and breakdown in joule-heated GaN nanowires.
    Author: Westover T, Jones R, Huang JY, Wang G, Lai E, Talin AA.
    Journal: Nano Lett; 2009 Jan; 9(1):257-63. PubMed ID: 19090697.
    Abstract:
    Thermal transport and breakdown in Joule-heated GaN nanowires is investigated using a combination of microphotoluminescence and in situ TEM characterization. The thermal conductivity of the nanowires is estimated to be <80 W/m.K, which is substantially below the bulk GaN value. Catastrophic breakdown in individual nanowires is observed to occur at a maximum temperature of approximately 1000 K, and nanowire morphology near the breakdown region indicates that failure occurs via thermal decomposition, a conclusion that is validated by in situ TEM images obtained during the failure process.
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