Near-Infrared Lasing from Small-Molecule Organic Hemispheres
文献类型：期刊论文
| 作者 | Wang, Xuedong1,2; Liao, Qing3; Li, Hui1,2; Bai, Shuming1,2; Wu, Yishi1; Lu, Xiaomei3; Hu, Huaiyuan4; Shi, Qiang1; Fu, Hongbing1,3,5 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2015-07-29 |
| 卷号 | 137期号:29页码:9289-9295 |
| 英文摘要 | Near-infrared (NIR) lasers are key components for applications, such as telecommunication, spectroscopy, display, and biomedical tissue imaging. Inorganic III-V semiconductor (GaAs) NIR lasers have achieved great successes but require expensive and sophisticated device fabrication techniques. Organic semiconductors exhibit chemically tunable optoelectronic properties together with self-assembling features that are well suitable for low-temperature solution processing. Major blocks in realizing NIR organic lasing include low stimulated emission of narrow-bandgap molecules due to fast nonradiative decay and exciton-exciton annihilation, which is considered as a main loss channel of population inversion for organic lasers under high carrier densities. Here we designed and synthesized the small organic molecule (E)-3-(4-(di-p-tolylamino)phenyl)-1-(1-hydroxynaphthalen-2-yl)prop-2-en-1-one (DPHP) with amphiphilic nature, which elaborately self-assembles into micrometer-sized hemispheres that simultaneously serves as the NIR emission medium with a photoluminescence quantum efficiency of similar to 15.2%, and the high-Q (similar to 1.4 x 10(3)) whispering gallery mode microcavity. Moreover, the radiative rate of DPHP hemispheres is enhanced up to similar to 1.98 x 109 s(-1) on account of the exciton-vibrational coupling in the solid state with the J-type molecular-coupling component, and meanwhile the exciton-exciton annihilation process is eliminated. As a result, NIR lasing with a low threshold of similar to 610 nJ/cm(2) is achieved in the single DPHP hemisphere at room temperature. Our demonstration is a major step toward incorporating the organic coherent light sources into the compact optoelectronic devices at NIR wavelengths. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/27794]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China 4.Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA 5.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xuedong,Liao, Qing,Li, Hui,et al. Near-Infrared Lasing from Small-Molecule Organic Hemispheres[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2015,137(29):9289-9295. |
| APA | Wang, Xuedong.,Liao, Qing.,Li, Hui.,Bai, Shuming.,Wu, Yishi.,...&Fu, Hongbing.(2015).Near-Infrared Lasing from Small-Molecule Organic Hemispheres.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,137(29),9289-9295. |
| MLA | Wang, Xuedong,et al."Near-Infrared Lasing from Small-Molecule Organic Hemispheres".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 137.29(2015):9289-9295. |
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来源：化学研究所
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