ITO-free large-area organic solar cells
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Updated: Jun 5, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
Published on: March 2, 2021
Seungkeun Choi1, William J Potscavage, Bernard Kippelen
1School of Electrical and Computer Engineering, Center for Organic Photonics and Electronics, Atlanta, Georgia 30332, USA.
Abstract:
We report on large-area pentacene / C₆₀ organic solar cells in which indium-tin-oxide (ITO) is replaced with a conductive polymer electrode and a 5 μm-thick metal grid is used to reduce resistive power losses. The performance of cells with the polymer electrode was compared with that of pentacene / C₆₀ devices using ITO as the transparent electrode. For large-area devices (7.3 cm²) on glass substrates with an integrated metal grid, the performance of a device with the polymer electrode is comparable to that of a device with an ITO electrode combined with a grid.
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