Plasmon Enhanced Solar-to-Fuel Energy Conversion

被引：455

作者：

Thomann, Isabel ^{[1
]}

Pinaud, Blaise A. ^{[2
]}

Chen, Zhebo ^{[2
]}

Clemens, Bruce M. ^{[1
]}

Jaramillo, Thomas F. ^{[2
]}

Brongersma, Mark L. ^{[1
]}

机构：

[1] Geballe Lab Adv Mat, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Plasmon; noble metal nanoparticles; iron oxide; water splitting; water oxidation; solar fuel; VISIBLE-LIGHT IRRADIATION; THIN-FILMS; GOLD NANOPARTICLES; PHOTOCATALYTIC ACTIVITY; SILVER NANOPARTICLES; METAL NANOPARTICLES; TIO2; FILMS; WATER; RESONANCE; OXIDATION;

D O I：

10.1021/nl201908s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Future generations of photoelectrodes for solar fuel generation must employ inexpensive, earth-abundant absorber materials in order to provide a large-scale source of clean energy. These materials tend to have poor electrical transport properties and exhibit carrier diffusion lengths which are significantly shorter than the absorption depth of light. As a result, many photoexcited carriers are generated too far from a reactive surface and recombine instead of participating in solar-to-fuel conversion. We demonstrate that plasmonic resonances in metallic nanostructures and multilayer interference effects can be engineered to strongly concentrate sunlight close to the electrode/liquid interface, precisely where the relevant reactions take place. On comparison of spectral features in the enhanced photocurrent spectra to full-field electromagnetic simulations, the contribution of surface plasmon excitations is verified. These results open the door to the optimization of a wide variety of photochemical processes by leveraging the rapid advances in the field of plasmonics.

引用

页码：3440 / 3446

页数：7

共 48 条

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