Control of Measurement Environments for High-Efficiency Organic Photovoltaic Cells
- 17 February 2006
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 45 (3L) , L217
- https://doi.org/10.1143/jjap.45.l217
Abstract
To fabricate a high-performance of organic photovoltaic (PV) cells, not only short-circuit photocurrent density (Isc), but also fill factor (FF) should be improved. Here, we improved FF by controlling the measurement environment. Because of the prevention of electron trapping by oxygen in the organic semiconducting layer, FF in vacuum environment increased 40% compared with that in air under 80 mW/cm2 irradiation of air mass 1.5 global solar conditions at room temperature. Finally, we obtained a power conversion efficiency of 3.6% by controlling the measurement environment and the optimization of the organic PV cell structure, where FF was markedly improved up to 0.61.Keywords
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