Tailoring the Energy Levels and Cavity Structures toward Organic Cocrystal Microlasers

Organic cocrystals with unique energy-level structures are potentially a new class of materials for the development of versatile solid-state lasers. However, till now, the stimulated emission in cocrystal materials remains a big challenge possibly because of the nonradiative charge-transfer (CT) tra...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2018-12, Vol.10 (49), p.42740-42746
Main Authors: Chu, Manman, Qiu, Bing, Zhang, Wei, Zhou, Zhonghao, Yang, Xinzheng, Yan, Yongli, Yao, Jiannian, Li, Yong Jun, Zhao, Yong Sheng
Format: Article
Language:English
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Summary:Organic cocrystals with unique energy-level structures are potentially a new class of materials for the development of versatile solid-state lasers. However, till now, the stimulated emission in cocrystal materials remains a big challenge possibly because of the nonradiative charge-transfer (CT) transitions. Here, for the first time, we report organic cocrystal microlasers constructed by simultaneously tailoring the energy levels and cavity structures based on the intermolecular halogen-bonding interactions. The intermolecular interactions triggered different self-assembly processes, resulting in distinct types of high-quality resonant microcavities. More importantly, the halogen-bonding interactions alleviated intermolecular CT and thus brought about a favorable four-level energy structure for the population inversion and tunable lasing in the cocrystals.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b16294