Loss mitigation in plasmonic solar cells: aluminium nanoparticles for broadband photocurrent enhancements in GaAs photodiodes

被引：123

作者：

Hylton, N. P. ^{[1
]}

Li, X. F. ^{[2
]}

Giannini, V. ^{[1
]}

Lee, K. -H. ^{[1
]}

Ekins-Daukes, N. J. ^{[1
]}

Loo, J. ^{[3
]}

Vercruysse, D. ^{[3
]}

Van Dorpe, P. ^{[3
,4
]}

Sodabanlu, H. ^{[5
]}

Sugiyama, M. ^{[5
]}

Maier, S. A. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[2] Soochow Univ, Inst Modern Opt Technol, Suzhou 215006, Jiangsu, Peoples R China

[3] IMEC, B-3001 Louvain, Belgium

[4] Katholieke Univ Leuven, Dept Phys & Astron, B-3000 Louvain, Belgium

[5] Univ Tokyo, Inst Engn Innovat, Sch Engn, Tokyo 1138656, Japan

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1038/srep02874

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We illustrate the important trade-off between far-field scattering effects, which have the potential to provide increased optical path length over broad bands, and parasitic absorption due to the excitation of localized surface plasmon resonances in metal nanoparticle arrays. Via detailed comparison of photocurrent enhancements given by Au, Ag and Al nanostructures on thin-film GaAs devices we reveal that parasitic losses can be mitigated through a careful choice of scattering medium. Absorption at the plasmon resonance in Au and Ag structures occurs in the visible spectrum, impairing device performance. In contrast, exploiting Al nanoparticle arrays results in a blue shift of the resonance, enabling the first demonstration of truly broadband plasmon enhanced photocurrent and a 22% integrated efficiency enhancement.

引用

页数：6

共 32 条

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Shi, Zhengrong ;

Gu, Min .

APPLIED PHYSICS LETTERS, 2012, 100 (15)

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