Abstract
We report on electrically driven amplified spontaneous emission and lasing in tetracene single crystals using field-effect electrodes for efficient electron and hole injection. For laser action, feedback is provided by reflections at the cleaved edges of the crystal resulting in a Fabry-Perot resonator. Increasing the injected current density above a certain threshold value results in the decreasing of the spectral width of the emission from 120 millielectron volts to less than 1 millielectron volt because of gain narrowing and eventually laser action. High electron and hole mobilities as well as balanced charge carrier injection lead to improved exciton generation in these gate-controlled devices. Moreover, the effect of charge-induced absorption is substantially reduced in high-quality single crystals compared with amorphous organic materials.
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@article{Scho_n_2000, title={An Organic Solid State Injection Laser}, volume={289}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.289.5479.599}, DOI={10.1126/science.289.5479.599}, number={5479}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Schön, J. H. and Kloc, Ch. and Dodabalapur, A. and Batlogg, B.}, year={2000}, month=jul, pages={599–601} }