Electromagnetic coupling of light into a silicon solar cell by nanodisk plasmons

被引：218

作者：

Hagglund, Carl ^{[1
]}

Zach, Michael ^{[1
]}

Petersson, Goran ^{[2
]}

Kasemo, Bengt ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden

[2] Chalmers Univ Technol, Dept Microtechnol & Nanosci, S-41296 Gothenburg, Sweden

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期

关键词：

D O I：

10.1063/1.2840676

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photocurrents of silicon pn junctions patterned with arrays of elliptical Au nanodisks were experimentally and theoretically investigated near the particle plasmon resonance wavelengths, for varying light polarizations and angles of incidence. At plasmon resonance wavelengths, overall backscattering and dissipation were strongly enhanced compared to an unpatterned junction, resulting in lower photocurrents. In contrast, enhanced photocurrents were observed for wavelengths slightly off resonance. Measurements and finite element calculations show that the photocurrent changes occur via plasmon-induced far field effects, rather than by near field enhancement close to the particles. The far field effects are strongly dependent on the particle proximity and coupling to the Si substrate. (C) 2008 American Institute of Physics.

引用

页数：3

共 11 条

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