Growth of high quality ZnO nanowires on graphene

Keun Young Lee, Brijesh Kumar, Hyun Kyu Park, Won Mook Choi, Jae Young Choi, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We report growth of the ZnO nanowires on graphene/SiO 2/Si substrates using a chemical vapor deposition method. The length of nanowires varies from 1 μm to 10 μm with increasing the growth time from 30 min to 90 min. X-ray diffraction and high-resolution transmission electron microscopy investigations predict the high structural quality of the c-axis grown single crystalline ZnO nanowires. Temperature dependent photoluminescence spectra from the nanowires reveal excellent optical quality and excitonic behavior in the single crystalline ZnO nanowires. A well-resolved free exciton emission at 3.375 eV, indicates high crystalline quality nanowires and a strong PL peak at 3.370 eV is assigned to neutral-donor bound excitons (D0X).

Original languageEnglish
Pages (from-to)1551-1554
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number2
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics

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