High photo-conversion efficiency Cu2ZnSn(S,Se)4 thin-film solar cells prepared by compound-precursors and metal-precursors

Juran Kim; Gee Yeong Kim; Dae Ho Son; Kee Jeong Yang; Dae Hwan Kim; Jin Kyu Kang; William Jo

doi:10.1016/j.solmat.2018.03.050

High photo-conversion efficiency Cu₂ZnSn(S,Se)₄ thin-film solar cells prepared by compound-precursors and metal-precursors

Juran Kim, Gee Yeong Kim, Dae Ho Son, Kee Jeong Yang, Dae Hwan Kim, Jin Kyu Kang, William Jo

Department of Physics

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

27 Scopus citations

Abstract

Cu₂ZnSn(S,Se)₄ (CZTSSe) thin-film solar cells have been fabricated by various methods. Sputtering is one of the vacuum processes that can be used for the growth of the precursors. In this study, CZTSSe thin-films that were fabricated using metal-precursors and with a high efficiency of 12.3% were examined in a comparison with CZTSSe thin-films that were fabricated using compound-precursors, whose efficiency is 9.1%. Especially, the Kelvin probe force microscopy (KPFM) analysis and local current measurement by conductive atomic force microscopy (c-AFM) show that their local electrical properties indicate completely opposite results. The grain boundaries (GBs) has a downward surface potential bending, and this repelled the minority carriers into the intragrains (IGs) in the sample from the metal-precursors. Therefore, we originally verified the differences between the carrier behaviors and the current flows on the surface.

Original language	English
Pages (from-to)	129-136
Number of pages	8
Journal	Solar Energy Materials and Solar Cells
Volume	183
DOIs	https://doi.org/10.1016/j.solmat.2018.03.050
State	Published - 15 Aug 2018

Bibliographical note

Funding Information:
This work was supported by two grants ( 2016M1A2A2936753 and 2016M1A2A2936784 ) of the Technology Development Program for the solving of climate change, and these were provided through the National Research Foundation (NRF), funded by the Ministry of Education, Republic of Korea . Further, a grant ( 17-BD-05 ) of the D aegu Gyeongbuk Institute of Science and Technology (DGIST) Research and Development (R&D) Program, funded by the Ministry of Science, ICT & Future Planning, Republic of Korea , was provided along with another NRF grant ( 2017R1D1A1B03034293 ) from the Basic Science Research Program.

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Carrier behavior
Compound precursors
Kelvin probe force microscopy
Metal precursors
Surface potential

Access to Document

10.1016/j.solmat.2018.03.050

Cite this

@article{054ac00dcc2447d7923b857459fef6ea,

title = "High photo-conversion efficiency Cu2ZnSn(S,Se)4 thin-film solar cells prepared by compound-precursors and metal-precursors",

abstract = "Cu2ZnSn(S,Se)4 (CZTSSe) thin-film solar cells have been fabricated by various methods. Sputtering is one of the vacuum processes that can be used for the growth of the precursors. In this study, CZTSSe thin-films that were fabricated using metal-precursors and with a high efficiency of 12.3% were examined in a comparison with CZTSSe thin-films that were fabricated using compound-precursors, whose efficiency is 9.1%. Especially, the Kelvin probe force microscopy (KPFM) analysis and local current measurement by conductive atomic force microscopy (c-AFM) show that their local electrical properties indicate completely opposite results. The grain boundaries (GBs) has a downward surface potential bending, and this repelled the minority carriers into the intragrains (IGs) in the sample from the metal-precursors. Therefore, we originally verified the differences between the carrier behaviors and the current flows on the surface.",

keywords = "Carrier behavior, Compound precursors, Kelvin probe force microscopy, Metal precursors, Surface potential",

author = "Juran Kim and Kim, {Gee Yeong} and Son, {Dae Ho} and Yang, {Kee Jeong} and Kim, {Dae Hwan} and Kang, {Jin Kyu} and William Jo",

note = "Funding Information: This work was supported by two grants ( 2016M1A2A2936753 and 2016M1A2A2936784 ) of the Technology Development Program for the solving of climate change, and these were provided through the National Research Foundation (NRF), funded by the Ministry of Education, Republic of Korea . Further, a grant ( 17-BD-05 ) of the D aegu Gyeongbuk Institute of Science and Technology (DGIST) Research and Development (R&D) Program, funded by the Ministry of Science, ICT & Future Planning, Republic of Korea , was provided along with another NRF grant ( 2017R1D1A1B03034293 ) from the Basic Science Research Program. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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T1 - High photo-conversion efficiency Cu2ZnSn(S,Se)4 thin-film solar cells prepared by compound-precursors and metal-precursors

AU - Kim, Juran

AU - Kim, Gee Yeong

AU - Son, Dae Ho

AU - Yang, Kee Jeong

AU - Kim, Dae Hwan

AU - Kang, Jin Kyu

AU - Jo, William

N1 - Funding Information: This work was supported by two grants ( 2016M1A2A2936753 and 2016M1A2A2936784 ) of the Technology Development Program for the solving of climate change, and these were provided through the National Research Foundation (NRF), funded by the Ministry of Education, Republic of Korea . Further, a grant ( 17-BD-05 ) of the D aegu Gyeongbuk Institute of Science and Technology (DGIST) Research and Development (R&D) Program, funded by the Ministry of Science, ICT & Future Planning, Republic of Korea , was provided along with another NRF grant ( 2017R1D1A1B03034293 ) from the Basic Science Research Program. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2018/8/15

Y1 - 2018/8/15

N2 - Cu2ZnSn(S,Se)4 (CZTSSe) thin-film solar cells have been fabricated by various methods. Sputtering is one of the vacuum processes that can be used for the growth of the precursors. In this study, CZTSSe thin-films that were fabricated using metal-precursors and with a high efficiency of 12.3% were examined in a comparison with CZTSSe thin-films that were fabricated using compound-precursors, whose efficiency is 9.1%. Especially, the Kelvin probe force microscopy (KPFM) analysis and local current measurement by conductive atomic force microscopy (c-AFM) show that their local electrical properties indicate completely opposite results. The grain boundaries (GBs) has a downward surface potential bending, and this repelled the minority carriers into the intragrains (IGs) in the sample from the metal-precursors. Therefore, we originally verified the differences between the carrier behaviors and the current flows on the surface.

AB - Cu2ZnSn(S,Se)4 (CZTSSe) thin-film solar cells have been fabricated by various methods. Sputtering is one of the vacuum processes that can be used for the growth of the precursors. In this study, CZTSSe thin-films that were fabricated using metal-precursors and with a high efficiency of 12.3% were examined in a comparison with CZTSSe thin-films that were fabricated using compound-precursors, whose efficiency is 9.1%. Especially, the Kelvin probe force microscopy (KPFM) analysis and local current measurement by conductive atomic force microscopy (c-AFM) show that their local electrical properties indicate completely opposite results. The grain boundaries (GBs) has a downward surface potential bending, and this repelled the minority carriers into the intragrains (IGs) in the sample from the metal-precursors. Therefore, we originally verified the differences between the carrier behaviors and the current flows on the surface.

KW - Carrier behavior

KW - Compound precursors

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