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 GeO 2 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 GeO 2 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 GeO 2 does not affect crystallinity of active layer.
Original language | English |
---|---|
Pages (from-to) | 623-628 |
Number of pages | 6 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 12 |
Issue number | 1 |
DOIs | |
State | Published - 2012 |
Keywords
- Optical spacer
- Organic bulk-heterojunction
- Organic solar cell
- Photovoltaic