Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals

doi:10.1021/jacs.8b09416

CIOMP OpenIR

	Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals
	Xiao, Guanjun 1; Wang, Yingnan 2; Han, Dong3 ; Li, Kexue 3; Feng, Xiaolei 4,5; Lv, Pengfei 1; Wang, Kai1 ; Liu, Lei3 ; Redfern, Simon A. T.4,5; Zou, Bo 1
	2018-10-24
发表期刊	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN	0002-7863
卷号	140 期号:42 页码:13970-13975
通讯作者	Zou, Bo(zoubo@jlu.edu.cn)
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.
关键词	cdse nanocrystals molybdenum-disulfide gold nanoclusters quantum dots photoluminescence phase transformation ligands transition wurtzite Chemistry
DOI	10.1021/jacs.8b09416
关键词[WOS]	CDSE NANOCRYSTALS ; MOLYBDENUM-DISULFIDE ; GOLD NANOCLUSTERS ; QUANTUM DOTS ; PHOTOLUMINESCENCE ; PHASE ; TRANSFORMATION ; LIGANDS ; TRANSITION ; WURTZITE
收录类别	SCI
语种	英语
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
项目资助者	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
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000448755200062
出版者	AMER CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60415
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.Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Jilin, Peoples R China 2.Northwest Univ, Sch Informat Sci & Technol, Xian 710127, Shaanxi, 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.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 5.Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England
推荐引用方式 GB/T 7714	Xiao, Guanjun,Wang, Yingnan,Han, Dong,et al. Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2018,140(42):13970-13975.
APA	Xiao, Guanjun.,Wang, Yingnan.,Han, Dong.,Li, Kexue.,Feng, Xiaolei.,...&Zou, Bo.(2018).Pressure-Induced Large Emission Enhancements of Cadmium Selenide Nanocrystals.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,140(42),13970-13975.
MLA	Xiao, Guanjun,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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