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
Pages161-166
Number of pages6
Volume1144
Publication statusPublished - 2009 Nov 25
Externally publishedYes
EventNanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 12008 Dec 5

Other

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

Fingerprint

wurtzite
Nanowires
Structural properties
nanowires
Optical properties
optical properties
Energy gap
Strain relaxation
controllability
Pulsed laser deposition
Controllability
Chemical analysis
Lattice constants
pulsed laser deposition
Photoluminescence
Crystalline materials
photoluminescence
scaling
Thin films
Substrates

ASJC Scopus subject areas

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

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 (Vol. 1144, pp. 161-166)

Structural and optical properties of pseudobinary wurtzite alloy nanowires. / Kwon, S. Joon; Choi, Young Jin; Choi, Kyoung Jin; Kim, Dong-Wan; Park, Jae Gwan.

Materials Research Society Symposium Proceedings. Vol. 1144 2009. p. 161-166.

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

Kwon, SJ, Choi, YJ, Choi, KJ, Kim, D-W & Park, JG 2009, Structural and optical properties of pseudobinary wurtzite alloy nanowires. in Materials Research Society Symposium Proceedings. vol. 1144, pp. 161-166, Nanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting, Boston, MA, United States, 08/12/1.
Kwon SJ, Choi YJ, Choi KJ, Kim D-W, Park JG. Structural and optical properties of pseudobinary wurtzite alloy nanowires. In Materials Research Society Symposium Proceedings. Vol. 1144. 2009. p. 161-166
Kwon, S. Joon ; Choi, Young Jin ; Choi, Kyoung Jin ; Kim, Dong-Wan ; Park, Jae Gwan. / Structural and optical properties of pseudobinary wurtzite alloy nanowires. Materials Research Society Symposium Proceedings. Vol. 1144 2009. pp. 161-166
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