Abstract

Improving optical property is critical for optimizing the power conversion efficiency of organic solar cells. In the present research, we show that modification of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) layer with GeO2 leads to 15% improvement of power conversion efficiency in a polymer solar cells through enhancement of short circuit currents. Modified PEDOT:PSS layer with optimized concentration of GeO2 assists active layer absorbing much light by playing a role of optical spacer. Using AFM and grazing incidence X-ray diffraction (GIXD) data, we also present the evidence that an addition of GeO2 does not affect crystallinity of active layer.

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Publisher Full Text

Authors

Choi MK, Kim JH, Yoon H, Tahk D, Seo S, Shin K, Lee HH

Institution

School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea.

Source

Journal of nanoscience and nanotechnology 12:1 2012 Jan pg 623-8

MeSH

Electric Power Supplies
Electron Transport
Equipment Design
Equipment Failure Analysis
Germanium
Nanostructures
Solar Energy

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22524030