Abstract
We extend existing lattice models of small-molecule amorphous semiconductors by accounting for changes in molecular polarizability upon charging or excitation. A compact expression of this contribution to the density of states is provided. Although the lattice model and the description based on a microscopic morphology both qualitatively predict an additional broadening, shift, and an exponential tail (traps) of the density of states, a quantitative agreement between the two cannot be achieved.
| Original language | English |
|---|---|
| Article number | 136401 |
| Journal | Physical Review Letters |
| Volume | 109 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 25 Sep 2012 |
| Externally published | Yes |
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Cite this
May, F., Baumeier, B., Lennartz, C., & Andrienko, D. (2012). Can lattice models predict the density of states of amorphous organic semiconductors? Physical Review Letters, 109(13), [136401]. https://doi.org/10.1103/PhysRevLett.109.136401