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arXiv · 1008.1115

Universality in Intensity Modulated Photocurrent in Bulk-Heterojunction Polymer Solar Cells

Monojit Bag·K. S. Narayan
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Abstract

We observe a universal feature in the frequency dependence of intensity modulated photocurrent Iph based on studies of a variety of efficient bulk-heterojunction polymer solar cells (BHJ-PSCs). This feature of Iph appears in the form of a local maximum in the 5 kHz < frequency < 10 kHz range and is observed to be largely independent of the external parameters such as modulated light intensity (Lac), wavelength, temperature (T), and external field (EF) over a wide range. Simplistic kinetic models involving carrier generation, recombination and extraction processes are used to interpret the overall essential features of Iph and correlate it to the device parameters.

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Monojit Bag, K. S. Narayan. 2010-08-06. Universality in Intensity Modulated Photocurrent in Bulk-Heterojunction Polymer Solar Cells. https://doi.org/10.1103/physrevb.82.075308

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