期刊
ADVANCED FUNCTIONAL MATERIALS
卷 31, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202102375
关键词
Ag nanowires; CsPbBr; (3) quantum dots; perovskite; plasmonic lasers; plasmonic waveguides
类别
资金
- JSPS KAKENHI [JP20H02197, JP20F40045, JP19H02543, JP20KK0114]
- JSPS Bilateral Joint Research Project [JPJSBP120209909]
- Ministry of Science and Technology (MOST), Taiwan [107-2112-M-002-024-MY3, 108-2923-M-002-002-MY2]
- Taiwan Consortium of Emergent Crystalline Materials (TCECM)
- Center of Atomic Initiative for New Materials (AI-MAT)
- National Taiwan University
- Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education in Taiwan [108L9008]
- Nanotechnology Platform of the MEXT, Japan [JPMXP09A20UT0063]
- JSPS
- China Scholarship Council [201906150137]
Metallic NW coupled QDs plasmonic nanolaser presents a promising approach for ultrasmall light sources, with potential applications and fundamental studies of light matter interactions.
Plasmonic nanolasers provide a valuable opportunity for expanding sub-wavelength applications. Due to the potential of on-chip integration, semiconductor nanowire (NW)-based plasmonic nanolasers that support the waveguide mode attract a high level of interest. To date, perovskite quantum dots (QDs) based plasmonic lasers, especially nanolasers that support plasmonic-waveguide mode, are still a challenge and remain unexplored. Here, metallic NW coupled CsPbBr3 QDs plasmonic-waveguide lasers are reported. By embedding Ag NWs in QDs film, an evolution from amplified spontaneous emission with a full width at half maximum (FWHM) of 6.6 nm to localized surface plasmon resonance (LSPR) supported random lasing is observed. When the pump light is focused on a single Ag NW, a QD-NW coupled plasmonic-waveguide laser with a much narrower emission peak (FWHM = 0.4 nm) is realized on a single Ag NW with the uniform polyvinylpyrrolidone layer. The QDs serve as the gain medium while the Ag NW serves as a resonant cavity and propagating plasmonic lasing modes. Furthermore, by pumping two Ag NWs with different directions, a dual-wavelength lasing switch is realized. The demonstration of metallic NW coupled QDs plasmonic nanolaser would provide an alternative approach for ultrasmall light sources as well as fundamental studies of light matter interactions.
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