Photonic Crystal Geometry for Organic Solar Cells

被引：209

作者：

Ko, Doo-Hyun ^{[1
]}

Tumbleston, John R. ^{[2
]}

Zhang, Lei ^{[1
]}

Williams, Stuart ^{[1
]}

DeSimone, Joseph M. ^{[1
]}

Lopez, Rene ^{[2
]}

Samulski, Edward T. ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27515 USA

[2] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA

来源：

NANO LETTERS | 2009年 / 9卷 / 07期

关键词：

EFFICIENCIES; PHOTODIODES; PERFORMANCE; GRATINGS;

D O I：

10.1021/nl901232p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report organic solar cells with a photonic crystal nanostructure embossed in the photoactive bulk heterojunction layer, a topography that exhibits a 3-fold enhancement of the absorption in specific regions of the solar spectrum in part through multiple excitation resonances. The photonic crystal geometry is fabricated using a materials-agnostic process called PRINT wherein highly ordered arrays of nanoscale features are readily made in a single processing step over wide areas (similar to 4 cm(2)) that is scalable. We show efficiency improvements of similar to 70% that result not only from greater absorption, but also from electrical enhancements. The methodology is generally applicable to organic solar cells and the experimental findings reported in our manuscript corroborate theoretical expectations.

引用

页码：2742 / 2746

页数：5

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