Photoactive nanocrystals by low-temperature welding of copper sulfide nanoparticles and indium sulfide nanosheets

Hui Min Lim; Jia Yi Tan; Sudip K. Batabyal; Shlomo Magdassi; Subodh G. Mhaisalkar; Lydia H. Wong

doi:10.1002/cssc.201402333

Photoactive nanocrystals by low-temperature welding of copper sulfide nanoparticles and indium sulfide nanosheets

Hui Min Lim^*
, Jia Yi Tan
, Sudip K. Batabyal
, Shlomo Magdassi
, Subodh G. Mhaisalkar
, Lydia H. Wong

^*Corresponding author for this work

Institute of Chemistry

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

6 Scopus citations

Abstract

We successfully utilize the concept of coalescence and room-temperature sintering to prepare morphologically different nanoparticles. n-Type chalcogenide (CuIn₅S₈) nanocrystals are synthesized at room temperature by simple mixing of oppositely charged precursor nanoparticles. The coalescence of polycation-coated CuS nanoparticles and negatively charged In₂S₃ nanoplates is driven by close contact of the particles due to electrostatic interactions. Analysis by X-ray diffraction, transmission electron microscopy (TEM) imaging, and Raman spectroscopy confirms the formation of single-phase CuIn₅S₈ without traceable secondary phase. In a photovoltaic device, the use of the coalesced particles yields a power conversion efficiency of 1.8%.

Original language	English
Pages (from-to)	3290-3294
Number of pages	5
Journal	ChemSusChem
Volume	7
Issue number	12
DOIs	https://doi.org/10.1002/cssc.201402333
State	Published - Dec 2014

Bibliographical note

Publisher Copyright:
© 2014 Wiley-VCH Verlag GmbH & Co. KGaA.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Chalcogens
Coalescence
Copper
Solar cells
Welding

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10.1002/cssc.201402333

Cite this

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title = "Photoactive nanocrystals by low-temperature welding of copper sulfide nanoparticles and indium sulfide nanosheets",

abstract = "We successfully utilize the concept of coalescence and room-temperature sintering to prepare morphologically different nanoparticles. n-Type chalcogenide (CuIn5S8) nanocrystals are synthesized at room temperature by simple mixing of oppositely charged precursor nanoparticles. The coalescence of polycation-coated CuS nanoparticles and negatively charged In2S3 nanoplates is driven by close contact of the particles due to electrostatic interactions. Analysis by X-ray diffraction, transmission electron microscopy (TEM) imaging, and Raman spectroscopy confirms the formation of single-phase CuIn5S8 without traceable secondary phase. In a photovoltaic device, the use of the coalesced particles yields a power conversion efficiency of 1.8\%.",

keywords = "Chalcogens, Coalescence, Copper, Solar cells, Welding",

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year = "2014",

month = dec,

doi = "10.1002/cssc.201402333",

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T1 - Photoactive nanocrystals by low-temperature welding of copper sulfide nanoparticles and indium sulfide nanosheets

AU - Lim, Hui Min

AU - Tan, Jia Yi

AU - Batabyal, Sudip K.

AU - Magdassi, Shlomo

AU - Mhaisalkar, Subodh G.

AU - Wong, Lydia H.

PY - 2014/12

Y1 - 2014/12

N2 - We successfully utilize the concept of coalescence and room-temperature sintering to prepare morphologically different nanoparticles. n-Type chalcogenide (CuIn5S8) nanocrystals are synthesized at room temperature by simple mixing of oppositely charged precursor nanoparticles. The coalescence of polycation-coated CuS nanoparticles and negatively charged In2S3 nanoplates is driven by close contact of the particles due to electrostatic interactions. Analysis by X-ray diffraction, transmission electron microscopy (TEM) imaging, and Raman spectroscopy confirms the formation of single-phase CuIn5S8 without traceable secondary phase. In a photovoltaic device, the use of the coalesced particles yields a power conversion efficiency of 1.8%.

AB - We successfully utilize the concept of coalescence and room-temperature sintering to prepare morphologically different nanoparticles. n-Type chalcogenide (CuIn5S8) nanocrystals are synthesized at room temperature by simple mixing of oppositely charged precursor nanoparticles. The coalescence of polycation-coated CuS nanoparticles and negatively charged In2S3 nanoplates is driven by close contact of the particles due to electrostatic interactions. Analysis by X-ray diffraction, transmission electron microscopy (TEM) imaging, and Raman spectroscopy confirms the formation of single-phase CuIn5S8 without traceable secondary phase. In a photovoltaic device, the use of the coalesced particles yields a power conversion efficiency of 1.8%.

KW - Chalcogens

KW - Coalescence

KW - Copper

KW - Solar cells

KW - Welding

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Photoactive nanocrystals by low-temperature welding of copper sulfide nanoparticles and indium sulfide nanosheets

Abstract

Bibliographical note

UN SDGs

Keywords

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