کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
79659 | 49362 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Size-dependent behavior of polymer solar cells measured under partial illumination Size-dependent behavior of polymer solar cells measured under partial illumination](/preview/png/79659.png)
We systemically investigate the size-dependent behavior of organic photovoltaics (OPVs) tested under partial illumination. An illumination mask was hypothesized to limit uncertainty associated with device size and illumination conditions when measurements are conducted on laboratory scales. Introducing the illumination mask into the measurement improves the accuracy of JSC; however partial illumination will result in a decrease in VOC and an increase in FF. This last observation is explained by diodes contributing both light and dark currents in the measurement. In addition to loss due to the energy required to separate bound excitons, these results suggest that non-optimized photo–dark current ratio could be another reason why measured VOC is less than ideal VOC.
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► Systemically investigate size-dependent behavior of organic photovoltaics (OPVs) tested under partial illumination.
► Introducing illumination mask into the measurement improves accuracy of JSC and EQE.
► VOC decreases and FF increases as lighted/dark area ratio decreases.
► Last observation is explained by diodes contributing both light and dark currents in the measurement.
Journal: Solar Energy Materials and Solar Cells - Volume 95, Issue 12, December 2011, Pages 3516–3519