Journal
ADVANCED OPTICAL MATERIALS
Volume 5, Issue 8, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201601003
Keywords
amplified spontaneous emission; carrier mobility; DFB lasers; organic lasers; organic semiconductors
Categories
Funding
- 973 project [2014CB648300, 2015CB932203]
- 863 project [2011AA050526]
- National Natural Science Foundation of China [21373114, 21573111, 61136003, 61376023]
- National Natural Science Funds for Excellent Young Scholar [21322402]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03001]
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Synergetic Innovation Center for Organic Electronics and Information Displays
- Natural Science Foundation of Jiangsu Province [BM2012010, BE2011191]
- Excellent Science and Technology Innovation Team of Jiangsu Higher Education Institutions
- Six Talents Peak Project of Jiangsu Province
- Qing Lan Project
- NUPT 1311 project
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High performance organic lasers with both good optical lasing property and desirable carrier mobility still remains a big challenge for realizing electrically pumped organic lasing. In this work, we have developed a carbazole-end-capped ladder-type oligo-(p-phenylene) based hybrid oligomer as solution-processable deep blue laser gain media to reach a good balance between optical property and carrier transporting ability, by introducing moderate steric hindrance into the pi-conjugated planar oligo-(p-phenylene) backbone. This material demonstrates excellent laser performance and moderate hole mobility of 1 x 10(-3) cm(2) V-1 s(-1). The 1-D distributed feedback (DFB) laser exhibits very low lasing threshold of 0.6 nJ pulse(-1) and high slope efficiency of 5.9 +/- 0.3% (50% fill factor). More importantly, the prominent ASE performance maintained at very thin film samples. The amplified spontaneous emission (ASE) threshold remains very low (16 nJ pulse(-1)) in the 45 nm-thickness film. These results might indicate possibilities for electrically pumped gain materials.
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