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 language | English |
|---|---|
| Title of host publication | Materials Research Society Symposium Proceedings |
| Pages | 161-166 |
| Number of pages | 6 |
| Volume | 1144 |
| Publication status | Published - 2009 Nov 25 |
| Externally published | Yes |
| Event | Nanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting - Boston, MA, United States Duration: 2008 Dec 1 → 2008 Dec 5 |
Other
| Other | Nanowires - Synthesis, Properties, Assembly and Applications - 2008 MRS Fall Meeting |
|---|---|
| Country | United States |
| City | Boston, MA |
| Period | 08/12/1 → 08/12/5 |
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ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
- Mechanics of Materials
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Structural and optical properties of pseudobinary wurtzite alloy nanowires
AU - Kwon, S. Joon
AU - Choi, Young Jin
AU - Choi, Kyoung Jin
AU - Kim, Dong-Wan
AU - Park, Jae Gwan
PY - 2009/11/25
Y1 - 2009/11/25
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=70450092794&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:70450092794
SN - 9781605111162
VL - 1144
SP - 161
EP - 166
BT - Materials Research Society Symposium Proceedings
ER -