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Tuning nanowire lasers via hybridization with two-dimensional materials
Edwin Eobaldt1, Francesco Vitale1, Maximilian Zapf1
1Institute of Solid State Physics, Friedrich Schiller University Jena, 07743 Jena, Germany. giancarlo.soavi@uni-jena.de.
Nanoscale
|April 21, 2022
Summary
Researchers developed a new method to combine zinc oxide (ZnO) nanowires with molybdenum disulfide (MoS2) monolayers. This hybridization allows for precise tuning of nanoscale lasing wavelengths in optoelectronic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Mixed-dimensional hybrid structures are crucial for advanced electronic and optoelectronic devices.
- Hybridizing semiconductor nanowires with 2D materials offers novel nanoscale lasing control.
Purpose of the Study:
- To deterministically fabricate ZnO nanowire and MoS2 monolayer heterostructures.
- To investigate the effect of MoS2 hybridization on ZnO nanowire optical properties and lasing.
- To explore carrier transfer mechanisms influencing lasing wavelength shifts.
Main Methods:
- Deterministic fabrication of mixed-dimensional heterostructures with micrometer precision.
- Optical characterization of ZnO nanowires before and after hybridization with MoS2.
- Analysis of lasing wavelength shifts attributed to carrier transfer and band gap modulation.
Main Results:
- Successful fabrication of ZnO-MoS2 heterostructures without degrading ZnO optical properties.
- Demonstrated tuning of ZnO nanowire lasing wavelength by several nanometers via MoS2 hybridization.
- Observed spectral shift linked to efficient carrier transfer and the Moss-Burstein effect in ZnO.
Conclusions:
- Deterministic fabrication is a viable method for creating functional mixed-dimensional heterostructures.
- Hybridization with MoS2 provides a pathway to tune nanoscale lasing properties.
- Carrier dynamics at the ZnO-MoS2 interface significantly impact optical band gap and lasing behavior.
