Difference between revisions of "Example:P3HT orientation analysis"

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This tutorial describes how to quantify the orientation distribution of the semiconducting polymer [[P3HT]]. This orientation analysis is meant to determine the relative amounts of the material oriented in different ways. The same kind of analysis can be applied to other semiconducting polymers or small-molecules. In fact, the same conceptual steps can be applied more broadly to determining any kind of orientation distribution (though one must be careful in interpreting the relationship between [[reciprocal-space]] peaks, which will be different for each material's specific [[unit cell]]).
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==P3HT orientation==
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TBD
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==Analysis==
 
TBD
 
TBD
  

Revision as of 13:30, 18 June 2014

This tutorial describes how to quantify the orientation distribution of the semiconducting polymer P3HT. This orientation analysis is meant to determine the relative amounts of the material oriented in different ways. The same kind of analysis can be applied to other semiconducting polymers or small-molecules. In fact, the same conceptual steps can be applied more broadly to determining any kind of orientation distribution (though one must be careful in interpreting the relationship between reciprocal-space peaks, which will be different for each material's specific unit cell).

P3HT orientation

TBD

Analysis

TBD

Caveats

  • Standing-up: The preceeding analysis has assumed that the 100 scattering along qr 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 qr), whereas for face-on, one should observe substantial intensity of the π-π peak in the out-of-plane direction (near qz axis).

Literature

Development/description of analysis method

Application of method

Related papers

Angular correction (curvature of Ewald sphere)

sin(angle) correction

Other orientation analyses