Aspect ratio tuned red-shift of photoluminescence emission of PbSe nanorods investigated by electron holography

doi:10.1016/j.jcis.2017.01.041

HFCAS OpenIR > 中科院强磁场科学中心

	Aspect ratio tuned red-shift of photoluminescence emission of PbSe nanorods investigated by electron holography
	Li, Ying 1,3; Du, Haifeng2 ; Zhang, Jie 1; Liu, Zhengwang 1; Tian, Mingliang2 ; Che, Renchao 1
	2017-05-01
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
摘要	The physical properties of nanometer scale semiconductors are known to be sensitively influenced by their aspect ratios, but the intrinsic mechanisms still remain unclear. Shape-controlled anisotropic PbSe nanorods were obtained by means of the addition of MnCl2, and the aspect ratio of the nanorods can be continuously tuned from 1 to 10 by simply modulating the amount of chloride ions. It was demonstrated that an optimized concentration of Cr- anions is about 0.04 mmol, which controls the competition between thermodynamics and kinetics mechanisms. The emission peaks of the infrared absorbance and photoluminescence spectra were significantly tuned from 1664 nm to 1840 nm and from 1459 nm to 1938 nm only by the aspect ratios, respectively. A strong electric dipole phenomenon localized onside the surface of PbSe nanorods terminated by Pb2+ charge was found by using high-spatial-resolution off-axis electron holography, which was furthermore evidenced by the quantitative analysis of the mean inner potential and the surfaces charge. The charge intensity depended on the aspect ratio of PbSe nanorods. The results provide clear evidence that the energy gap interval reduces as a result of the increasing of conduction charge amounts. A novel strategy to facilely shift the peak position of absorbance and photoluminescence emission was therefore proposed. (C) 2017 Published by Elsevier Inc.
文章类型	Article
关键词	Pbse Nanorods Photoluminescence Emission Aspect Ratio Off-axis Electron Holography Chloride Ions
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1016/j.jcis.2017.01.041
关键词[WOS]	MULTIPLE EXCITON GENERATION ; QUANTUM DOTS ; CDSE NANOCRYSTALS ; SHAPE CONTROL ; MONODISPERSE ; ATTACHMENT ; GROWTH ; NANOSTRUCTURES ; SUPERLATTICES ; ABSORPTION
收录类别	SCI
语种	英语
项目资助者	Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; Ministry of Science and Technology of China (973 Project)(2013CB932901) ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; National Natural Science Foundation of China(51672050 ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; NASF(U1330118) ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; Shanghai Pujiang Program ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; "Shu Guang" project of Shanghai Municipal Education Commission ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; Shanghai Education Development Foundation(09SG01) ; 11274066) ; 11274066) ; 11274066) ; 11274066) ; 11274066) ; 11274066) ; 11274066) ; 11274066)
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000394632600044
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/32905
专题	中科院强磁场科学中心
作者单位	1.Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Dept Mat Sci, Adv Mat Lab, Shanghai 200438, Peoples R China 2.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China 3.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
推荐引用方式 GB/T 7714	Li, Ying,Du, Haifeng,Zhang, Jie,et al. Aspect ratio tuned red-shift of photoluminescence emission of PbSe nanorods investigated by electron holography[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2017,493(无):385-392.
APA	Li, Ying,Du, Haifeng,Zhang, Jie,Liu, Zhengwang,Tian, Mingliang,&Che, Renchao.(2017).Aspect ratio tuned red-shift of photoluminescence emission of PbSe nanorods investigated by electron holography.JOURNAL OF COLLOID AND INTERFACE SCIENCE,493(无),385-392.
MLA	Li, Ying,et al."Aspect ratio tuned red-shift of photoluminescence emission of PbSe nanorods investigated by electron holography".JOURNAL OF COLLOID AND INTERFACE SCIENCE 493.无(2017):385-392.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Aspect ratio tuned r（4332KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载