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- W2048067874 abstract "We demonstrate the potential of Kelvin Probe Force Microscopy (KPFM) for analyzing degradation effects in GaN-based laser diodes (LDs). Thereby, the surface potential at the mirror facet was measured locally for both, unbiased LDs and LDs exposed to a well-defined current. In the unbiased case, our KPFM measurements demonstrate the impact of aging on the mirror facet, which we attribute to a photon enhanced facet oxidation. In case of an externally applied voltage, the local variation of the Kelvin voltage across the heterostructure layer sequence is analyzed. A clear correlation between macroscopic <i>I-V</i>-characteristics and the microscopic data obtained with the KPFM is found." @default.
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- W2048067874 date "2007-02-08" @default.
- W2048067874 modified "2023-10-17" @default.
- W2048067874 title "Degradation studies of InGaN/GaN heterostructure laser diodes using a Kelvin Force Microscope" @default.
- W2048067874 doi "https://doi.org/10.1117/12.704855" @default.
- W2048067874 hasPublicationYear "2007" @default.
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