Synthesis of monodisperse CdS nanowires and their photovoltaic applications

Lifei Xi; Winnie Xiu Wen Tan; Kee Sze Chua; Chris Boothroyd; Yeng Ming Lam

doi:10.1016/j.tsf.2009.02.054

Synthesis of monodisperse CdS nanowires and their photovoltaic applications

Lifei Xi, Winnie Xiu Wen Tan, Kee Sze Chua, Chris Boothroyd, Yeng Ming Lam^*

^*Corresponding author for this work

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

26 Citations (Scopus)

Abstract

Cadmium sulphide (CdS) nanowires with a monodisperse diameter of 3.6 nm and an aspect ratio of 10-170 were successfully synthesized using a simple and reproducible hot coordinating solvents method. The morphology and optical properties of the CdS nanocrystals were investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM) ultraviolet-visible (UV-Vis) absorption spectroscopy and photoluminescence (PL) spectroscopy. It was found that using a long alkyl chain phosphonic acid-octadecylphosphonic acid (ODPA) causes a low diffusion rate and low reactivity which help to control the morphology of the nanocrystals. The timing of the injection process was also found to have critical effect on the morphology of the nanocrystals. Sharp peaks in both the UV-Vis absorption and PL spectra indicate that the size distribution of the diameter is nearly monodisperse. The photovoltaic properties of photovoltaic devices made with a blend of our nanowires and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) were also investigated. Devices made with the nanowires were found to have double the I_sc observed in devices made with lower aspect ratio CdS nanorods. The possible reason of low photocurrent and high V_oc is maybe due to the presence of ligand in the nanocrystals.

Original language	English
Pages (from-to)	6430-6434
Number of pages	5
Journal	Thin Solid Films
Volume	517
Issue number	23
DOIs	https://doi.org/10.1016/j.tsf.2009.02.054
Publication status	Published - Oct 1 2009
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

Keywords

Cadmium sulphide
Interconnected network
Monodisperse
Nanowires
Solution process

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.tsf.2009.02.054

Cite this

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title = "Synthesis of monodisperse CdS nanowires and their photovoltaic applications",

abstract = "Cadmium sulphide (CdS) nanowires with a monodisperse diameter of 3.6 nm and an aspect ratio of 10-170 were successfully synthesized using a simple and reproducible hot coordinating solvents method. The morphology and optical properties of the CdS nanocrystals were investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM) ultraviolet-visible (UV-Vis) absorption spectroscopy and photoluminescence (PL) spectroscopy. It was found that using a long alkyl chain phosphonic acid-octadecylphosphonic acid (ODPA) causes a low diffusion rate and low reactivity which help to control the morphology of the nanocrystals. The timing of the injection process was also found to have critical effect on the morphology of the nanocrystals. Sharp peaks in both the UV-Vis absorption and PL spectra indicate that the size distribution of the diameter is nearly monodisperse. The photovoltaic properties of photovoltaic devices made with a blend of our nanowires and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) were also investigated. Devices made with the nanowires were found to have double the Isc observed in devices made with lower aspect ratio CdS nanorods. The possible reason of low photocurrent and high Voc is maybe due to the presence of ligand in the nanocrystals.",

keywords = "Cadmium sulphide, Interconnected network, Monodisperse, Nanowires, Solution process",

author = "Lifei Xi and Tan, {Winnie Xiu Wen} and Chua, {Kee Sze} and Chris Boothroyd and Lam, {Yeng Ming}",

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T1 - Synthesis of monodisperse CdS nanowires and their photovoltaic applications

AU - Xi, Lifei

AU - Tan, Winnie Xiu Wen

AU - Chua, Kee Sze

AU - Boothroyd, Chris

AU - Lam, Yeng Ming

PY - 2009/10/1

Y1 - 2009/10/1

N2 - Cadmium sulphide (CdS) nanowires with a monodisperse diameter of 3.6 nm and an aspect ratio of 10-170 were successfully synthesized using a simple and reproducible hot coordinating solvents method. The morphology and optical properties of the CdS nanocrystals were investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM) ultraviolet-visible (UV-Vis) absorption spectroscopy and photoluminescence (PL) spectroscopy. It was found that using a long alkyl chain phosphonic acid-octadecylphosphonic acid (ODPA) causes a low diffusion rate and low reactivity which help to control the morphology of the nanocrystals. The timing of the injection process was also found to have critical effect on the morphology of the nanocrystals. Sharp peaks in both the UV-Vis absorption and PL spectra indicate that the size distribution of the diameter is nearly monodisperse. The photovoltaic properties of photovoltaic devices made with a blend of our nanowires and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) were also investigated. Devices made with the nanowires were found to have double the Isc observed in devices made with lower aspect ratio CdS nanorods. The possible reason of low photocurrent and high Voc is maybe due to the presence of ligand in the nanocrystals.

AB - Cadmium sulphide (CdS) nanowires with a monodisperse diameter of 3.6 nm and an aspect ratio of 10-170 were successfully synthesized using a simple and reproducible hot coordinating solvents method. The morphology and optical properties of the CdS nanocrystals were investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM) ultraviolet-visible (UV-Vis) absorption spectroscopy and photoluminescence (PL) spectroscopy. It was found that using a long alkyl chain phosphonic acid-octadecylphosphonic acid (ODPA) causes a low diffusion rate and low reactivity which help to control the morphology of the nanocrystals. The timing of the injection process was also found to have critical effect on the morphology of the nanocrystals. Sharp peaks in both the UV-Vis absorption and PL spectra indicate that the size distribution of the diameter is nearly monodisperse. The photovoltaic properties of photovoltaic devices made with a blend of our nanowires and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) were also investigated. Devices made with the nanowires were found to have double the Isc observed in devices made with lower aspect ratio CdS nanorods. The possible reason of low photocurrent and high Voc is maybe due to the presence of ligand in the nanocrystals.

KW - Cadmium sulphide

KW - Interconnected network

KW - Monodisperse

KW - Nanowires

KW - Solution process

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Synthesis of monodisperse CdS nanowires and their photovoltaic applications

Abstract

ASJC Scopus Subject Areas

Keywords

UN SDGs

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