Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals
文献类型：期刊论文
| 作者 | Zou, Bo5; Redfern, Simon A. T.1,2; Liu, Lei3 ; Wang, Kai5; Lv, Pengfei5; Feng, Xiaolei1,2; Li, Kexue3; Han, Dong3; Wang, Yingnan4; Xiao, Guanjun5
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| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
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| 出版日期 | 2018-10-24 |
| 卷号 | 140期号:42页码:13970-13975 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/jacs.8b09416 |
| 通讯作者 | Zou, Bo(zoubo@jlu.edu.cn) |
| 英文摘要 | Pressure quenching of optical emission largely limits the potential application of many materials in optical pressure-sensing devices, since emission intensity is crucially connected to performance. Boosting visible-light emission at high pressure is, therefore, an important goal. Here, we demonstrate that the emission of CdSe nanocrystals (NCs) can be enhanced by more than an order of magnitude by compression. The brightest emission can be achieved at pressures corresponding to the phase transitions in different sized CdSe NCs. Very bright blue emission can be obtained by exploiting the increase in band gap with increasing pressure. First-principles calculations indicate that the interaction between the capping oleic acid (OA) layer and the CdSe core is strengthened with increased Hirshfeld charge at high pressure. The effective surface reconstruction associated with the removal of surface-related trap states is highly responsible for the pressure-induced emission enhancement of these CdSe NCs. These findings pave the way for designing a stress nanogauge with easy optical readout and provide a route for tuning bright-fluorescence imaging in response to an externally applied pressure. |
| WOS关键词 | CDSE NANOCRYSTALS ; MOLYBDENUM-DISULFIDE ; GOLD NANOCLUSTERS ; QUANTUM DOTS ; PHOTOLUMINESCENCE ; PHASE ; TRANSFORMATION ; LIGANDS ; TRANSITION ; WURTZITE |
| 资助项目 | National Key R&D Program of China[2018YFA0305900] ; National Natural Science Foundation of China[21725304] ; National Natural Science Foundation of China[11774125] ; National Natural Science Foundation of China[61525404] ; National Natural Science Foundation of China[11504368] ; National Natural Science Foundation of China[11774120] ; National Natural Science Foundation of China[21673100] ; National Natural Science Foundation of China[91227202] ; Chang Jiang Scholars Program of China[T2016051] ; Changbai Mountain Scholars Program[2013007] ; National Defense Science and Technology Key Laboratory Fund[6142A0306010917] ; Scientific Research Planning Project of the Education Department of Jilin Province[JJKH20180118KJ] ; Program for Innovative Research Team (in Science and Technology) in University of Jilin Province ; NERC[NE/P019714/1] ; China Scholarship Council |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000448755200062 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Chang Jiang Scholars Program of China ; Changbai Mountain Scholars Program ; National Defense Science and Technology Key Laboratory Fund ; Scientific Research Planning Project of the Education Department of Jilin Province ; Program for Innovative Research Team (in Science and Technology) in University of Jilin Province ; NERC ; China Scholarship Council |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60416]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 通讯作者 | Zou, Bo |
| 作者单位 | 1.Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England 2.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 3.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China 4.Northwest Univ, Sch Informat Sci & Technol, Xian 710127, Shaanxi, Peoples R China 5.Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Bo,Redfern, Simon A. T.,Liu, Lei,et al. Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2018,140(42):13970-13975. |
| APA | Zou, Bo.,Redfern, Simon A. T..,Liu, Lei.,Wang, Kai.,Lv, Pengfei.,...&Xiao, Guanjun.(2018).Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,140(42),13970-13975. |
| MLA | Zou, Bo,et al."Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 140.42(2018):13970-13975. |
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