Photonic Crystal Geometry for Organic Solar Cells

Title
Photonic Crystal Geometry for Organic Solar Cells
Authors
고두현John R. TumblestonLei ZhangStuart WilliamsJoseph M. DeSimoneRene LopezEdward T. Samulski
Issue Date
2009-07
Publisher
Nano letters
Citation
VOL 9, NO 7, 2742-2746
Abstract
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 (∼4 cm2) that is scalable. We show efficiency improvements of ∼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.
URI
http://pubs.kist.re.kr/handle/201004/47992
ISSN
15306984
Appears in Collections:
KIST Publication > Article
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