Systematic study on experimental conditions for large-scale growth of aligned ZnO nanwires on nitrides

Jinhui Song, Xudong Wang, Elisa Riedo, Zhong L. Wang

Research output: Contribution to journalArticle

Abstract

In vapor-liquid-solid (VLS) growth, it is generally believed that nanowires would grow as long as the right catalysts and substrate are supplied as well as the growth temperature is adequate. We show here, however, that oxygen partial pressure plays a key role in determining the quality of the aligned ZnO nanowires. We present a "phase diagram" between the oxygen partial pressure and the growth chamber pressure for synthesizing high quality aligned ZnO nanowires on GaN substrate. This result provides a road map for large-scale, controlled synthesis of ZnO nanowires on nitride semiconductor substrates with the potential to meet the needs of practical applications. The chemical process involved in the growth process is also systematically elaborated based on experimental data received under different conditions.

Original languageEnglish (US)
Pages (from-to)9869-9872
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number20
DOIs
StatePublished - May 26 2005

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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