Noninjection Gram-Scale Synthesis of Monodisperse Pyramidal CuInS2 Nanocrystals and Their Size-Dependent Properties

doi:10.1021/nn1015538

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	Noninjection Gram-Scale Synthesis of Monodisperse Pyramidal CuInS2 Nanocrystals and Their Size-Dependent Properties
	Zhong, Haizheng 1,4; Lo, Shun S.1,4; Mirkovic, Tihana 1,4; Li, Yunchao 2; Ding, Yuqin 3; Li, Yongfang 3; Scholes, Gregory D.1,4
刊名	ACS NANO
	2010-09-01
卷号	4 期号:9 页码:5253-5262
关键词	Noninjection Method Cuins2 Nanocrystals Light Emitters Solar Harvesters Quantum Confinement Effects Energy Levels Cyclic Voltammetry
ISSN号	1936-0851
DOI	10.1021/nn1015538
英文摘要	CuInS2 nanocrystals are viewed as very good candidates for solar harvesting and light emitting applications. Here we report an optimized noninjection method for the synthesis of monodisperse pyramidal CuInS2 nanocrystals with sizes ranging from 3 to 8 nm. This synthetic route is able to yield large amounts of high quality nanoparticles, usually in the gram scale for one batch experiment. The structure and surface studies showed that the resulting nanocrystals are pyramids of CuInS2 tetragonal phase with well-defined facets, while their surface is functionalized with dodecanethiol capping ligands. Spectroscopic and electrochemical measurements revealed size-dependent optical and electrical properties of CuInS2 nanocrystals, demonstrating quantum confinement effects in these systems. The size-dependent optical bandgaps of CuInS2 nanocrystals were found to be consistent with the finite-depth well effective mass approximation (EMA) calculations, which provide a convenient method to estimate the diameter of CulnS(2) pyramids. Additionally we have also determined some important physical parameters, including bandgaps and energy levels, for this system, which are crucial for the integration of CulnS(2) nanocrystals in potential device applications.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000282121000038
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/69397]
专题	中国科学院化学研究所
通讯作者	Scholes, Gregory D.
作者单位	1.Univ Toronto, Ctr Quantum Informat & Quantum Control, Toronto, ON M5S 3H6, Canada 2.Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 4.Univ Toronto, Dept Chem, Inst Opt Sci, Toronto, ON M5S 3H6, Canada
推荐引用方式 GB/T 7714	Zhong, Haizheng,Lo, Shun S.,Mirkovic, Tihana,et al. Noninjection Gram-Scale Synthesis of Monodisperse Pyramidal CuInS2 Nanocrystals and Their Size-Dependent Properties[J]. ACS NANO,2010,4(9):5253-5262.
APA	Zhong, Haizheng.,Lo, Shun S..,Mirkovic, Tihana.,Li, Yunchao.,Ding, Yuqin.,...&Scholes, Gregory D..(2010).Noninjection Gram-Scale Synthesis of Monodisperse Pyramidal CuInS2 Nanocrystals and Their Size-Dependent Properties.ACS NANO,4(9),5253-5262.
MLA	Zhong, Haizheng,et al."Noninjection Gram-Scale Synthesis of Monodisperse Pyramidal CuInS2 Nanocrystals and Their Size-Dependent Properties".ACS NANO 4.9(2010):5253-5262.