Example:P3HT orientation analysis

Caveats

• Standing-up: The preceeding analysis has assumed that the 100 scattering along q_r arises from face-on material. However, both face-on and end-on material would give rise to scattering at that position in reciprocal-space. To differentiate between those two possibilities, one must invoke additional data. Specifically, one can look at the 010 (π-π) peak: for end-on, the π-π peak will also be in-plane (along q_r), whereas for face-on, one should observe substantial intensity of the π-π peak in the out-of-plane direction (near q_z axis).

Literature

Related papers

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=Angular correction

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sin(angle) correction

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Development/description of analysis method

• Nanoimprint-Induced Molecular Orientation in Semiconducting Polymer Nanostructures Htay Hlaing, Xinhui Lu, Tommy Hofmann, Kevin G. Yager, Charles T. Black, and Benjamin M. Ocko ACS Nano 2011, 5 (9), 7532-7538 doi: 10.1021/nn202515z
• Enhanced charge collection in confined bulk heterojunction organic solar cells Jonathan E. Allen, Kevin G. Yager, Htay Hlaing, Chang-Yong Nam, Benjamin M. Ocko and Charles T. Black Applied Physics Letters 2011, 99, 163301. doi: 10.1063/1.3651509 c.f. Supplementary Information
• One-Volt Operation of High-Current Vertical Channel Polymer Semiconductor Field-Effect Transistors Johnston, D.E.; Yager, K.G.; Nam, C.-Y.; Ocko, B.M.; Black, C.T. Nano Letters 2012, 8, 4181–4186 doi: 10.1021/nl301759j
• Nanostructured Surfaces Frustrate Polymer Semiconductor Molecular Orientation Johnston, D.E.; Yager, K.G.; Hlaing, H.; Lu, X.; Ocko, B.M.; Black, C.T. ACS Nano 2014 doi: 10.1021/nn4060539

Application of method

• Stable and Controllable Polymer/Fullerene Composite Nanofibers through Cooperative Noncovalent Interactions for Organic Photovoltaics Fei Li, Kevin G. Yager, Noel M. Dawson, Ying-Bing Jiang, Kevin J. Malloy, and Yang Qin Chemistry of Materials 2014 doi: 10.1021/cm501251n