TITLE

Influence of a SiN mask on GaN layer by metalorganic chemical vapor deposition

AUTHOR(S)
Deok Kyu Kim
PUB. DATE
May 2008
SOURCE
Journal of Materials Science: Materials in Electronics;May2008, Vol. 19 Issue 5, p471
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
GaN layers with an in-situ SiN mask were grown by metalorganic chemical vapor deposition (MOCVD) and the physical properties of the GaN layer were examined. Also, PN junction light emitting diode (LED) was fabricated to investigate the effect of the SiN mask on its optical property. When inserting a SiN mask, (102) the full width at half maximum (FWHM) decreased from 480 to 409 arcsec and threading dislocation (TD) density decreased from 3.21 × 109 to 9.7 × 108 cm−2. The photoluminescence (PL) peak intensity of the sample with a SiN mask increased two times than that of the sample without a SiN mask. The output power of the LED with a SiN mask increased from 198 to 392 mcd at 20 mA, too. We found that a SiN mask improved significantly the physical and optical properties of the GaN layer.
ACCESSION #
30015284

 

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