Efficiency improvement of organic solar cells by tuning hole transport layer with germanium oxide.
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.
School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea.
SourceJournal of nanoscience and nanotechnology 12:1 2012 Jan pg 623-8
MeSHElectric Power Supplies
Equipment Failure Analysis
Pub Type(s)Journal Article