期刊
LASER & PHOTONICS REVIEWS
卷 7, 期 3, 页码 432-438出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201200105
关键词
Random laser; Surface tension driven lithography; Oligo-Thiophene; Nano-photonics; Nano-lithography
资金
- European Research Council under the European Community [201766]
- Italian Ministry of Education, University and Research under the Basic Research Investigation Fund [RBFR08M3P4]
- FIRB-Italnanonet
- CNR-EFOR
The random laser emission from the functionalized thienyl-S,S-dioxide quinquethiophene (T5OCx) in confined patterns with different shapes is demonstrated. Functional patterning of the light emitter organic material in well defined features is obtained by spontaneous molecular self-assembly guided by surface tension driven (STD) lithography. Such controlled supramolecular nano-aggregates act as scattering centers allowing the fabrication of one-component organic lasers with no external resonator and with desired shape and efficiency. Atomic force microscopy shows that different geometric pattern with different supramolecular organization obtained by the lithographic process tailors the coherent emission properties by controlling the distribution and the size of the random scatterers.
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