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Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers (2013)
Journal Article
Tremolet de Villers, B. J., MacKenzie, R. C., Jasieniak, J. J., Treat, N. D., & Chabinyc, M. L. (2014). Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers. Advanced Energy Materials, 4(5), Article 1301290. https://doi.org/10.1002/aenm.201301290

It is demonstrated that a combination of microsecond transient photocurrent measurements and fi lm morphology characterization can be used to identify a charge-carrier blocking layer within polymer:fullerene bulk-heterojunction solar cells. Solution-... Read More about Linking vertical bulk-heterojunction composition and transient photocurrent dynamics in organic solar cells with solution-processed MoOx contact layers.

Visualizing charge separation in bulk heterojunction organic solar cells (2013)
Journal Article
Vithanage, D. A., Devižis, A., Abramavičius, V., Infahsaeng, Y., Abramavičius, D., MacKenzie, R., …Gulbinas, V. (2013). Visualizing charge separation in bulk heterojunction organic solar cells. Nature Communications, 4, Article 2334. https://doi.org/10.1038/ncomms3334

Solar cells based on conjugated polymer and fullerene blends have been developed as a low-cost alternative to silicon. For efficient solar cells, electron–hole pairs must separate into free mobile charges that can be extracted in high yield. We still... Read More about Visualizing charge separation in bulk heterojunction organic solar cells.

The physical meaning of charge extraction by linearly increasing voltage transients from organic solar cells (2013)
Journal Article
Hanfland, R., Fischer, M. A., Brütting, W., Würfel, U., & MacKenzie, R. C. I. (2013). The physical meaning of charge extraction by linearly increasing voltage transients from organic solar cells. Applied Physics Letters, 103(6), 063904. https://doi.org/10.1063/1.4818267

Carrier mobility in organic solar cells is almost exclusively determined with the Charge Extraction by Linearly Increasing Voltage (CELIV) technique; indeed much of our understanding of the recombination and charge transport mechanisms in organic sol... Read More about The physical meaning of charge extraction by linearly increasing voltage transients from organic solar cells.

Interpreting the density of states extracted from organic solar cells using transient photocurrent measurements (2013)
Journal Article
MacKenzie, R. C. I., Shuttle, C. G., Dibb, G. F., Treat, N., von Hauff, E., Robb, M. J., …Nelson, J. (2013). Interpreting the density of states extracted from organic solar cells using transient photocurrent measurements. Journal of Physical Chemistry C, 117(24), 12407-12414. https://doi.org/10.1021/jp4010828

The energetic distribution of trapped carrier states (DoS) in organic photovoltaic (OPV) devices is a key device parameter which controls carrier mobility and the recombination rate; as such, it can ultimately limit device efficiency. Recent studies... Read More about Interpreting the density of states extracted from organic solar cells using transient photocurrent measurements.