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Growth of n-doped GaAs nanowires by Au-assisted Metalorganic Chemical Vapor Deposition: Effect of Flux Rates of n-type Dopants

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N-doped GaAs nanowires (NWs) were grown on GaAs (111) B substrate by means of vapor-liquid-solid (VLS) mechanism in a metalorganic chemical vapor deposition (MOCVD) system. Two flux rates of n-type dopants used for GaAs NWs growth were researched. For comparison, undoped GaAs NWs were grown at the same conditions. It is found that all NWs are vertical to the substrate and no lateral growth occurs. The growth rate is proportional the flux rates of n dopant. It is observed that there is Gibbs - Thomson effect in doped NWs. Pure zinc blende structures without any stacking faults from bottom to top for all three samples were achieved.

© 2010 Optical Society of America

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