Structural and optical properties of pseudobinary wurtzite alloy nanowires

S. Joon Kwon, Young Jin Choi, Kyoung Jin Choi, Dong Wan Kim, Jae Gwan Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pseudobinary CdS xSe 1-x and ZnS xSe 1-x (0 ≤ × ≤ 1) alloy nanowires were synthesized on an Au-coated Si substrate by pulsed laser deposition (PLD) process. The synthesized alloy nanowires were single crystalline hexagonal wurtzite structures. Both the lattice constant and the unit cell volume of each alloy nanowire were linearly correlated with the composition, x, and therefore satisfying the Vegard's law. Bandgap of each alloy nanowire measured by photoluminescence (PL) also changed linearly with the composition implying its tunability in the spectral region over a range of 1.75-2.45 eV (CdS xSe 1-x) and 2.66-3.50 eV (ZnS xSe 1-x) with more systematic controllability. This linear scaling behavior of the bandgaps of each alloy nanowire was clearly distinguished from the case of thin films made of the same materials and some case of the ZnS xSe 1-x alloy nanowires reported by another group mainly due to the inner strain relaxation in the confined one-dimensional structure of the nanowires.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Nanowires - Synthesis, Properties, Assembly and Applications
Pages161-166
Number of pages6
Publication statusPublished - 2009
EventNanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 12008 Dec 5

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1144
ISSN (Print)0272-9172

Other

OtherNanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period08/12/108/12/5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Structural and optical properties of pseudobinary wurtzite alloy nanowires'. Together they form a unique fingerprint.

  • Cite this

    Kwon, S. J., Choi, Y. J., Choi, K. J., Kim, D. W., & Park, J. G. (2009). Structural and optical properties of pseudobinary wurtzite alloy nanowires. In Materials Research Society Symposium Proceedings - Nanowires - Synthesis, Properties, Assembly and Applications (pp. 161-166). (Materials Research Society Symposium Proceedings; Vol. 1144).