Pushing the High-Energy Limit of Plasmonics

被引：53

作者：

Bisio, Francesco ^{[1
]}

Zaccaria, Remo Proietti ^{[2
]}

Moroni, Riccardo ^{[1
]}

Maidecchi, Giulia ^{[3
,4
]}

Alabastri, Alessandro ^{[2
]}

Gonella, Grazia ^{[5
]}

Giglia, Angelo ^{[6
]}

Andolfi, Laura ^{[6
]}

Nannarone, Stefano ^{[6
]}

Mattera, Lorenzo ^{[3
,4
]}

Canepa, Maurizio ^{[3
,4
]}

机构：

[1] CNR SPIN, I-16152 Genoa, Italy

[2] Ist Italiano Tecnol, I-16163 Genoa, Italy

[3] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[4] CNISM, Sede Consorziata Genova, I-16146 Genoa, Italy

[5] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA

[6] CNR Ist Officina Mat, I-34149 Trieste, Italy

来源：

ACS NANO | 2014年 / 8卷 / 09期

关键词：

plasmonics; aluminum; ultraviolet; nanoparticle; self-organization; METAL NANOPARTICLES; ALUMINUM; OXIDATION; RESONANCE; AU; SPECTROSCOPY; METAMATERIALS; FABRICATION; MORPHOLOGY; SCATTERING;

D O I：

10.1021/nn503035b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The localized surface plasmon resonance of metal nanoparticles allows confining the eletromagnetic field in nanosized volumes, creating high-field "hot spots", most useful for enhanced nonlinear optical spectroscopies. The commonly employed metals, Au and Ag, yield plasmon resonances only spanning the visible/near-infrared range. Stretching upward, the useful energy range of plasmonics requires exploiting different materials. Deep-ultraviolet plasmon resonances happen to be achievable with one of the cheapest and most abundant materials available: aluminum indeed holds the promise of a broadly tunable plasmonic response, theoretically extending far into the deep-ultraviolet. Complex nanofabrication and the unavoidable Al oxidation have so far prevented the achievement of this ultimate high-energy response. A nanofabrication technique producing purely metallic Al nanoparticles has at last allowed to overcome these limits, pushing the plasmon resonance to 6.8 eV photon energy (approximate to 180nm) and thus significantly broadening the spectral range of plasmonics' numerous applications.

引用

页码：9239 / 9247

页数：9

共 54 条

[1] Design of Plasmonic Nanoparticles for Efficient Subwavelength Light Trapping in Thin-Film Solar Cells [J].