Defects were investigated in undoped GaN and AlGaN epilayers grown on Al/sub 2/O/sub 3/ substrates by metal organic vapor phase epitaxy. Threading dislocations (TDs) and horizontal dislocations (HDs) in GaN were imaged and classified into different types. Precipitates and their punching out dislocations were recognized in undoped AlGaN. Defects at AlGaN/GaN interface are analyzed to result from compressive stress.


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    Title :

    Defects in III nitrides


    Contributors:


    Publication date :

    2003-01-01


    Size :

    405895 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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