Dopant-induced formation of branched CdS nanocrystals

Yung-Jung Hsu; Shih Yuan Lu

doi:10.1002/smll.200700787

Dopant-induced formation of branched CdS nanocrystals

Yung-Jung Hsu^*, Shih Yuan Lu

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The formation of tetrapod-dominated branched CdS nanocrystals (NCs) by incorporating a trace amount of dopant in a solvothermal process, was investigated. CdS NCs were obtained under solvothermal reaction with Cd(NO ₃)₂ and S powder as the reactants and ethylenediamine (EN) as the solvent. High-resolution transmission electron microscopy (HRTEM) was utilized to observe the crystallographic structure of the branched NCs. Scanning electron microscopy (SEM) was also used to examine the structures and dimensions of the NCs. UV/Vis and photoluminescence (PL) spectroscopy were used to analyze the optical properties of the CdS-based nanostructures. The solvothermal reaction was terminated at the first stage of the NC growth by controlling the experimental conditions. The synthesis of Se-doped CdS NCs was also conducted at dilute Se concentration. Results show that the doping inducement effect can affect the manipulation and controllability of anistropic NCs.

Original language	English
Pages (from-to)	951-955
Number of pages	5
Journal	Small
Volume	4
Issue number	7
DOIs	https://doi.org/10.1002/smll.200700787
State	Published - 1 Jul 2008

Keywords

Cadmium sulfide
Crystal growth
Doping
Nanostructures
Tetrapods

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abstract = "The formation of tetrapod-dominated branched CdS nanocrystals (NCs) by incorporating a trace amount of dopant in a solvothermal process, was investigated. CdS NCs were obtained under solvothermal reaction with Cd(NO 3)2 and S powder as the reactants and ethylenediamine (EN) as the solvent. High-resolution transmission electron microscopy (HRTEM) was utilized to observe the crystallographic structure of the branched NCs. Scanning electron microscopy (SEM) was also used to examine the structures and dimensions of the NCs. UV/Vis and photoluminescence (PL) spectroscopy were used to analyze the optical properties of the CdS-based nanostructures. The solvothermal reaction was terminated at the first stage of the NC growth by controlling the experimental conditions. The synthesis of Se-doped CdS NCs was also conducted at dilute Se concentration. Results show that the doping inducement effect can affect the manipulation and controllability of anistropic NCs.",

keywords = "Cadmium sulfide, Crystal growth, Doping, Nanostructures, Tetrapods",

author = "Yung-Jung Hsu and Lu, {Shih Yuan}",

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T1 - Dopant-induced formation of branched CdS nanocrystals

AU - Hsu, Yung-Jung

AU - Lu, Shih Yuan

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N2 - The formation of tetrapod-dominated branched CdS nanocrystals (NCs) by incorporating a trace amount of dopant in a solvothermal process, was investigated. CdS NCs were obtained under solvothermal reaction with Cd(NO 3)2 and S powder as the reactants and ethylenediamine (EN) as the solvent. High-resolution transmission electron microscopy (HRTEM) was utilized to observe the crystallographic structure of the branched NCs. Scanning electron microscopy (SEM) was also used to examine the structures and dimensions of the NCs. UV/Vis and photoluminescence (PL) spectroscopy were used to analyze the optical properties of the CdS-based nanostructures. The solvothermal reaction was terminated at the first stage of the NC growth by controlling the experimental conditions. The synthesis of Se-doped CdS NCs was also conducted at dilute Se concentration. Results show that the doping inducement effect can affect the manipulation and controllability of anistropic NCs.

AB - The formation of tetrapod-dominated branched CdS nanocrystals (NCs) by incorporating a trace amount of dopant in a solvothermal process, was investigated. CdS NCs were obtained under solvothermal reaction with Cd(NO 3)2 and S powder as the reactants and ethylenediamine (EN) as the solvent. High-resolution transmission electron microscopy (HRTEM) was utilized to observe the crystallographic structure of the branched NCs. Scanning electron microscopy (SEM) was also used to examine the structures and dimensions of the NCs. UV/Vis and photoluminescence (PL) spectroscopy were used to analyze the optical properties of the CdS-based nanostructures. The solvothermal reaction was terminated at the first stage of the NC growth by controlling the experimental conditions. The synthesis of Se-doped CdS NCs was also conducted at dilute Se concentration. Results show that the doping inducement effect can affect the manipulation and controllability of anistropic NCs.

KW - Cadmium sulfide

KW - Crystal growth

KW - Doping

KW - Nanostructures

KW - Tetrapods

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SN - 1613-6810

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Dopant-induced formation of branched CdS nanocrystals

Abstract

Keywords

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