2014
DOI: 10.1080/09500839.2014.976285
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In situmeasurement of GaN film photoluminescence under plasma etching

Abstract: This work focuses on an improved method that enables us to measure in situ GaN film photoluminescence (PL) under Ar or N 2 plasma etching. Although the background signal is large and increases with bias voltage, the GaN PL can be obtained after subtraction of this background from the total luminescence. Moreover, after plasma etching, the intensities of the near-band-edge and the yellow luminescence decrease significantly. It is suggested that this behaviour is strongly related to the heavy plasma-induced dama… Show more

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