Bag, Monojit ; Narayan, K. S. (2010) Universality in the intensity-modulated photocurrent in bulk-heterojunction polymer solar cells Physical Review B: Condensed Matter and Materials Physics, 82 (7). 075308_1-075308_6. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v82/i7/e075308
Related URL: http://dx.doi.org/10.1103/PhysRevB.82.075308
Abstract
We observe a universal feature in the frequency (ω) dependence of intensity-modulated photocurrent Iph(ω) based on studies of a variety of efficient bulk-heterojunction polymer solar cells. This feature of Iph(ω) appears in the form of a local maximum in the 5<ωmax<10 kHz range and is observed to be largely independent of the external parameters such as modulated light intensity (Lac), wavelength (λ), temperature (T), and external field over a wide range. Simplistic kinetic models involving carrier generation, recombination, and extraction processes are used to interpret the overall essential features of Iph(ω) and correlate it to the device parameters.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 92196 |
| Deposited On: | 01 Jun 2012 09:07 |
| Last Modified: | 01 Jun 2012 09:07 |
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