Solution-processed anthracene-based molecular glasses as stable blue-light-emission laser gain media
Article
Niu, Q., Zhang, Q., Xu, W., Jiang, Y., Xia, R., Bradley, D., Li, D. and Wen, S. 2015. Solution-processed anthracene-based molecular glasses as stable blue-light-emission laser gain media. Organic Electronics. 18, pp. 95-100. https://doi.org/10.1016/j.orgel.2015.01.012
Type | Article |
---|---|
Title | Solution-processed anthracene-based molecular glasses as stable blue-light-emission laser gain media |
Authors | Niu, Q., Zhang, Q., Xu, W., Jiang, Y., Xia, R., Bradley, D., Li, D. and Wen, S. |
Abstract | Two asymmetric 9,10-disubstituted anthracene-based, solution-processable, molecular glasses were studied in detail as thin-film laser gain media and were found to demonstrate very low amplified spontaneous emission (ASE) thresholds (0.75–1.1 μJ/pulse). Distributed feedback (DFB) lasers fabricated with these materials by spin coating on top of pre-etched silica one-dimensional (1-D) gratings exhibited a minimum laser threshold of 5.7 nJ per pulse (17.7 μJ cm−2) and maximum slope efficiency of 3.6%. The thermal stability of the gain was also investigated, with ASE observed for thermal annealing at temperatures up to 300 °C without any significant increase in threshold. The high thermal stability and low laser threshold make these materials very promising gain media. Comparison of the two glasses demonstrated that whilst fluorine-substitution significantly lowers the HOMO and LUMO levels it does not dramatically affect the gain. Our results suggest a potential approach for materials synthesis to address the challenge of electrically pumping an organic laser. |
Keywords | Optical gain properties; Solution-processed organic semiconductor lasers; 9,10-disubstituted anthracenes; Fluorine atom substitution; Thermal stability |
Research Group | Biomarkers for Cancer group |
Publisher | Elsevier |
Journal | Organic Electronics |
ISSN | 1566-1199 |
Publication dates | |
Online | 19 Jan 2015 |
01 Mar 2015 | |
Publication process dates | |
Deposited | 06 Apr 2016 |
Accepted | 09 Jan 2015 |
Output status | Published |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.orgel.2015.01.012 |
Language | English |
https://repository.mdx.ac.uk/item/86322
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