Abstrakti
Using drift-diffusion simulations we have clarified the effect of 2-dimensional (2D) lamellar ordering on the device performance and, in particular, the open circuit voltage in donor-acceptor type organic solar cells. The simulations are performed both in systems where direct (band-to-band) recombination dominates and in systems where trap-assisted recombination dominates. Results show that lamellar ordering reduces both the amount of direct and trap-assisted recombination, which is beneficial for device performance. The effect is particularly prominent for small lamellar thicknesses (~ 1 nm). It is furthermore shown that in the case of s-shaped current-voltage characteristics due to electrostatic injection barriers the s-shape becomes less prominent for thinner lamellar thicknesses.
Alkuperäiskieli | Ei tiedossa |
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Otsikko | Organic Photovoltaics XVI |
Toimittajat | Zakya H. Kafafi, Paul A. Lane, Ifor D. W. Samuel |
Sivut | – |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2015 |
OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisuussa |
Tapahtuma | SPIE Optics + Photonics - Kesto: 9 elok. 2015 → 13 elok. 2015 |
Konferenssi
Konferenssi | SPIE Optics + Photonics |
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Ajanjakso | 09/08/15 → 13/08/15 |