Optical Properties of GaSb Nanofibers
2011
Optical Properties of GaSb Nanofibers
publication
Evidence: moderate
Author Information
Author(s): Zhou Xiuli, Guo Wei, Perez-Bergquist Alejandro G, Wei Qiangmin, Chen Yanbin, Sun Kai, Wang Lumin
Primary Institution: University of Michigan
Hypothesis
The study investigates the optical properties of GaSb nanofibers formed by ion beam irradiation.
Conclusion
The GaSb nanofibers exhibit enhanced photoluminescence and unique optical properties that may be useful in optoelectronic devices.
Supporting Evidence
- The Raman intensity of the GaSb LO phonon mode decreased after ion beam irradiation.
- A new mode is observed at ~155 cm-1 related to the A1g mode of Sb–Sb bond vibration.
- Room temperature PL measurements of the annealed nanofibers present a wide feature band at ~1.4–1.6 eV.
- The PL properties of the irradiated samples show a large blue shift compared to bulk GaSb.
Takeaway
Scientists made tiny fibers from a material called GaSb and found that they glow differently than the regular material, which could help make better electronic devices.
Methodology
GaSb single-crystal wafers were irradiated with ion beams and then analyzed using Raman scattering and photoluminescence.
Digital Object Identifier (DOI)
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