N. Keegan

High throughput testing platform for organic solar cells (2008)

Riede, M.K., Sylvester-Hvid, K.O., Glatthaar, M., Keegan, N., Ziegler, T., Zimmermann, B., ...

In this paper we present a high throughput testing setup for organic solar cells that is necessary for an efficient analysis of their behaviour. The setup comprises process parameter logging,...

Efficiency limiting factors of organic bulk heterojunction solar cells identified by electrical impedance spectroscopy (2007)

Glatthaar, M., Riede, M., Keegan, N., Sylvester-Hvid, K., Zimmermann, B., Niggemann, M., ...

The currentSvoltage characteristic and the performance of organic bulk-heterojunction solar cells are very sensitive to small variations in the production steps or environmental influences. In our...

Analyzing poly(3-hexyl-thiophene):1-(3-methoxy-carbonyl)propyl-1-phenyl-(6,6)C61 bulk-heterojunction solar cells by UV-visible spectroscopy and optical simulations (2007)

Sylvester-Hvid, K.O., Ziegler, T., Riede, M.K., Keegan, N., Niggemann, M., Gombert, A.

A nondestructive method for assessing the thickness of the photoactive layer in poly(3-hexyl-thiophene):1-(3-methoxy-carbonyl)propyl-1-phenyl-(6,6)C-61 (P3HT:PCBM) solar cells is reported. In the...

Neutron reflectometry of membrane protein assemblies at the solid/liquid interface (2005)

Holt, SA, Lakey, JH, Daud, SM, Keegan, N

Neutron reflectometry has been used to study each step in the self-assembly of a membrane protein, OmpF, onto a gold coated silicon substrate from solution. The OmpF associates into trimers and has...