Asymmetry in photocurrent enhancement by plasmonic nanoparticle arrays located on the front or on the rear of solar cells

被引：143

作者：

Beck, F. J. ^{[1
]}

Mokkapati, S. ^{[1
]}

Polman, A. ^{[2
]}

Catchpole, K. R. ^{[1
]}

机构：

[1] Australian Natl Univ, Ctr Sustainable Energy Syst, Coll Engn & Comp Sci, Canberra, ACT 0200, Australia

[2] Inst AMOLF, Ctr Nanophoton, FOM, NL-1098 XG Amsterdam, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

elemental semiconductors; nanoparticles; photoemission; plasmonics; silicon; silver; solar cells;

D O I：

10.1063/1.3292020

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show experimentally that there is asymmetry in photocurrent enhancement by Ag nanoparticle arrays located on the front or on the rear of solar cells. The scattering cross-section calculated for front- and rear-located nanoparticles can differ by up to a factor of 3.7, but the coupling efficiency remains the same. We attribute this to differences in the electric field strength and show that the normalized scattering cross-section of a front-located nanoparticle varies from two to eight depending on the intensity of the driving field. In addition, the scattering cross-section of rear-located particles can be increased fourfold using ultrathin spacer layers.

引用

页数：3

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