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Surface Polarity and Shape‐Controlled Synthesis of ZnO Nanostructures on GaN Thin Films Based on Catalyst‐Free Metalorganic Vapor Phase Epitaxy
Author(s) -
Song Taeseup,
Choung Jae Woong,
Park JeaGun,
Park Won Il,
Rogers John A.,
Paik Ungyu
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801190
Subject(s) - nanorod , materials science , metalorganic vapour phase epitaxy , epitaxy , nanostructure , nanotechnology , thin film , phase (matter) , vapor phase , morphology (biology) , optoelectronics , chemical engineering , layer (electronics) , organic chemistry , chemistry , physics , engineering , thermodynamics , genetics , biology
Surface polarity and shape‐controlled ZnO nanostructures are synthesized on GaN thin films using metalorganic vapor phase epitaxy (MOVPE). By adjusting the growth parameters from Zn‐rich at low temperature to O‐rich at high temperature, morphology of ZnO nanostructures was tuned from nonpolar, smooth‐surfaced ZnO nanorod nanowall networks to O‐polar, stacked pyramid‐structured ZnO nanorods.