Thursday, November 4, 2010

Trapped by solid state physics

There is an interesting looking perspective piece in Journal of Physical Chemistry Letters
Intrinsic Charge Trapping in Organic and Polymeric Semiconductors: A Physical Chemistry Perspective by L. G. Kaake, P. F. Barbara and X.-Y. Zhu

It begins
We aim to understand the origins of intrinsic charge carrier traps in organic and polymeric semiconductor materials from a physical chemistry perspective. In crystalline organic semiconductors, we point out some of the inadequacies in the description of intrinsic charge traps using language and concepts developed for inorganic semiconductors. In π-conjugated polymeric semiconductors, we suggest the presence of a two-tier electronic energy landscape, a bimodal majority landscape due to two dominant structural motifs and a minority electronic energy landscape from intrinsic charged defects.

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