A facile and low cost synthesis of earth abundant element Cu 2ZnSnS 4 (CZTS) nanocrystals: Effect of Cu concentrations

Seung Wook Shin; Jun Hee Han; Chan Yeong Park; Sae Rok Kim; Yeon Chan Park; G. L. Agawane; A. V. Moholkar; Jae Ho Yun; Chae Hwan Jeong; Jeong Yong Lee; Jin Hyeok Kim

doi:10.1016/j.jallcom.2012.06.086

A facile and low cost synthesis of earth abundant element Cu ₂ZnSnS ₄ (CZTS) nanocrystals: Effect of Cu concentrations

Seung Wook Shin, Jun Hee Han, Chan Yeong Park, Sae Rok Kim, Yeon Chan Park, G. L. Agawane, A. V. Moholkar, Jae Ho Yun, Chae Hwan Jeong, Jeong Yong Lee, Jin Hyeok Kim

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

51 Scopus citations

Abstract

Cu ₂ZnSnS ₄ (CZTS) nanocrystals (NCs) were synthesized by sulfurization of microwave assisted precursor powders without toxic chemicals. The effects of different Cu concentration from 0.01 to 0.025 M on the structural, morphological, compositional, chemical and optical properties of CZTS NCs were investigated. X-ray diffraction patterns, X-ray photoelectron spectroscopy and transmission electron microscopy results showed that the precursor powder contains several broad peaks that could not be assigned to CZTS, ZnS, Cu _2-xS, Sn ₂S ₃ and Cu ₂SnS ₃. However, the sulfurized NCs showed both kesterite CZTS and Cu- and Sn-based secondary phases except for that formed at Cu concentration of 0.02 M. Inductively coupled plasma (ICP) results showed that the presence of Cu in the sulfurized CZTS NCs increased with increasing Cu concentration from 16.57 to 32.94 at.% while Zn and Sn in the sulfurized CZTS NCs decreased with increasing Cu concentration. UV-Vis spectroscopy results showed that the absorption coefficient of the sulfurized NCs was over 10 ⁴ cm ^-1 in the visible region and band gap energy of the sulfurized CZTS NCs decreased from 1.65 to 1.28 eV with increasing Cu concentration.

Original language	English (US)
Pages (from-to)	192-197
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	541
DOIs	https://doi.org/10.1016/j.jallcom.2012.06.086
State	Published - Nov 15 2012
Externally published	Yes

Bibliographical note

Funding Information:
This study was supported partially by National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST No. 2011-0016564) and by the Center for Inorganic Photovoltaic Materials (2012-0001170) grant funded by Korea government.

Keywords

Cu ZnSnS (CZTS) absorber material
Cu concentration
Facile and low cost microwave assisted process
Nanocrystal (NCs)

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@article{4425af4a990744caa42484362e19c1ec,

title = "A facile and low cost synthesis of earth abundant element Cu 2ZnSnS 4 (CZTS) nanocrystals: Effect of Cu concentrations",

abstract = "Cu 2ZnSnS 4 (CZTS) nanocrystals (NCs) were synthesized by sulfurization of microwave assisted precursor powders without toxic chemicals. The effects of different Cu concentration from 0.01 to 0.025 M on the structural, morphological, compositional, chemical and optical properties of CZTS NCs were investigated. X-ray diffraction patterns, X-ray photoelectron spectroscopy and transmission electron microscopy results showed that the precursor powder contains several broad peaks that could not be assigned to CZTS, ZnS, Cu 2-xS, Sn 2S 3 and Cu 2SnS 3. However, the sulfurized NCs showed both kesterite CZTS and Cu- and Sn-based secondary phases except for that formed at Cu concentration of 0.02 M. Inductively coupled plasma (ICP) results showed that the presence of Cu in the sulfurized CZTS NCs increased with increasing Cu concentration from 16.57 to 32.94 at.% while Zn and Sn in the sulfurized CZTS NCs decreased with increasing Cu concentration. UV-Vis spectroscopy results showed that the absorption coefficient of the sulfurized NCs was over 10 4 cm -1 in the visible region and band gap energy of the sulfurized CZTS NCs decreased from 1.65 to 1.28 eV with increasing Cu concentration.",

keywords = "Cu ZnSnS (CZTS) absorber material, Cu concentration, Facile and low cost microwave assisted process, Nanocrystal (NCs)",

author = "Shin, {Seung Wook} and Han, {Jun Hee} and Park, {Chan Yeong} and Kim, {Sae Rok} and Park, {Yeon Chan} and Agawane, {G. L.} and Moholkar, {A. V.} and Yun, {Jae Ho} and Jeong, {Chae Hwan} and Lee, {Jeong Yong} and Kim, {Jin Hyeok}",

note = "Funding Information: This study was supported partially by National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST No. 2011-0016564) and by the Center for Inorganic Photovoltaic Materials (2012-0001170) grant funded by Korea government.",

year = "2012",

month = nov,

day = "15",

doi = "10.1016/j.jallcom.2012.06.086",

language = "English (US)",

volume = "541",

pages = "192--197",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - A facile and low cost synthesis of earth abundant element Cu 2ZnSnS 4 (CZTS) nanocrystals

T2 - Effect of Cu concentrations

AU - Shin, Seung Wook

AU - Han, Jun Hee

AU - Park, Chan Yeong

AU - Kim, Sae Rok

AU - Park, Yeon Chan

AU - Agawane, G. L.

AU - Moholkar, A. V.

AU - Yun, Jae Ho

AU - Jeong, Chae Hwan

AU - Lee, Jeong Yong

AU - Kim, Jin Hyeok

N1 - Funding Information: This study was supported partially by National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST No. 2011-0016564) and by the Center for Inorganic Photovoltaic Materials (2012-0001170) grant funded by Korea government.

PY - 2012/11/15

Y1 - 2012/11/15

N2 - Cu 2ZnSnS 4 (CZTS) nanocrystals (NCs) were synthesized by sulfurization of microwave assisted precursor powders without toxic chemicals. The effects of different Cu concentration from 0.01 to 0.025 M on the structural, morphological, compositional, chemical and optical properties of CZTS NCs were investigated. X-ray diffraction patterns, X-ray photoelectron spectroscopy and transmission electron microscopy results showed that the precursor powder contains several broad peaks that could not be assigned to CZTS, ZnS, Cu 2-xS, Sn 2S 3 and Cu 2SnS 3. However, the sulfurized NCs showed both kesterite CZTS and Cu- and Sn-based secondary phases except for that formed at Cu concentration of 0.02 M. Inductively coupled plasma (ICP) results showed that the presence of Cu in the sulfurized CZTS NCs increased with increasing Cu concentration from 16.57 to 32.94 at.% while Zn and Sn in the sulfurized CZTS NCs decreased with increasing Cu concentration. UV-Vis spectroscopy results showed that the absorption coefficient of the sulfurized NCs was over 10 4 cm -1 in the visible region and band gap energy of the sulfurized CZTS NCs decreased from 1.65 to 1.28 eV with increasing Cu concentration.

AB - Cu 2ZnSnS 4 (CZTS) nanocrystals (NCs) were synthesized by sulfurization of microwave assisted precursor powders without toxic chemicals. The effects of different Cu concentration from 0.01 to 0.025 M on the structural, morphological, compositional, chemical and optical properties of CZTS NCs were investigated. X-ray diffraction patterns, X-ray photoelectron spectroscopy and transmission electron microscopy results showed that the precursor powder contains several broad peaks that could not be assigned to CZTS, ZnS, Cu 2-xS, Sn 2S 3 and Cu 2SnS 3. However, the sulfurized NCs showed both kesterite CZTS and Cu- and Sn-based secondary phases except for that formed at Cu concentration of 0.02 M. Inductively coupled plasma (ICP) results showed that the presence of Cu in the sulfurized CZTS NCs increased with increasing Cu concentration from 16.57 to 32.94 at.% while Zn and Sn in the sulfurized CZTS NCs decreased with increasing Cu concentration. UV-Vis spectroscopy results showed that the absorption coefficient of the sulfurized NCs was over 10 4 cm -1 in the visible region and band gap energy of the sulfurized CZTS NCs decreased from 1.65 to 1.28 eV with increasing Cu concentration.

KW - Cu ZnSnS (CZTS) absorber material

KW - Cu concentration

KW - Facile and low cost microwave assisted process

KW - Nanocrystal (NCs)

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U2 - 10.1016/j.jallcom.2012.06.086

DO - 10.1016/j.jallcom.2012.06.086

M3 - Article

AN - SCOPUS:84865057892

SN - 0925-8388

VL - 541

SP - 192

EP - 197

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -