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News and Views
Nature Materials 7, 354 - 355 (2008)
doi:10.1038/nmat2174
Polymer semiconductors: A fast mover with a bright spark
Samson A. Jenekhe1
- Samson A. Jenekhe is in the Department of Chemical Engineering, University of Washington, Seattle, Washington 98195-1750, USA.
e-mail: jenekhe@u.washington.edu
Abstract
The combination of high-mobility charge transport and efficient luminescence in one material has so far proved elusive in semiconducting polymers. Varying the side groups on a single polymer can improve both properties simultaneously.
Despite major advances in using organic semiconductors in electronics and optoelectronics in the past two decades1, 2, 3, the field is still missing definite progress towards an electrically pumped organic semiconductor laser4, 5. To achieve electrically pumped lasing, one needs a highly luminescent medium capable of optical gain — in other words, able to amplify its own emission — and simultaneously able to carry current large enough to provide a sufficiently high number of excited states in the material to initiate lasing4, 5.
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