Single elementary target-sputtered Cu2ZnSnSe4 thin film solar cells

Yeon Hwa Jo; Bhaskar Chandra Mohanty; Deuk Ho Yeon; Seung Min Lee; Yong Soo Cho

doi:10.1016/j.solmat.2014.08.043

Single elementary target-sputtered Cu₂ZnSnSe₄ thin film solar cells

Yeon Hwa Jo, Bhaskar Chandra Mohanty, Deuk Ho Yeon, Seung Min Lee, Yong Soo Cho

Department of Materials Science and Engineering

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

38 Citations (Scopus)

Abstract

A simple single elementary target sputtering method is proposed as an alternative to the multi-target sputter approach for preparing Cu₂ZnSnSe₄ absorber films. Several single targets utilizing excess Cu and Zn, including Cu₂ZnSnSe₄, Cu₂Zn_1.5SnSe₄, Cu_2.5Zn_1.5SnSe₄ and Cu₃Zn_1.5SnSe₄, were investigated to determine the absorber film with the most promising structural and photovoltaic performance. A conversion efficiency of ~4.16% was obtained from the Cu_2.5Zn_1.5SnSe₄ single target, which displayed well-defined grain structures with desirable Zn/Sn and Cu/(Zn+Sn) ratios. Critical roles of excess Cu and Zn during sputtering are discussed in conjunction with microstructural evolution, elemental distribution, photovoltaic characteristics and grain boundary contributions, which are specified for the sputtering method.

Original language	English
Pages (from-to)	136-141
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	132
DOIs	https://doi.org/10.1016/j.solmat.2014.08.043
Publication status	Published - 2015 Jan

Bibliographical note

Funding Information:
This work was financially supported by a grant (no. 2011-0020285 ) from the National Research Foundation of Korea funded by the Korean government .

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

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

Access to Document

10.1016/j.solmat.2014.08.043

Cite this

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title = "Single elementary target-sputtered Cu2ZnSnSe4 thin film solar cells",

abstract = "A simple single elementary target sputtering method is proposed as an alternative to the multi-target sputter approach for preparing Cu2ZnSnSe4 absorber films. Several single targets utilizing excess Cu and Zn, including Cu2ZnSnSe4, Cu2Zn1.5SnSe4, Cu2.5Zn1.5SnSe4 and Cu3Zn1.5SnSe4, were investigated to determine the absorber film with the most promising structural and photovoltaic performance. A conversion efficiency of ~4.16% was obtained from the Cu2.5Zn1.5SnSe4 single target, which displayed well-defined grain structures with desirable Zn/Sn and Cu/(Zn+Sn) ratios. Critical roles of excess Cu and Zn during sputtering are discussed in conjunction with microstructural evolution, elemental distribution, photovoltaic characteristics and grain boundary contributions, which are specified for the sputtering method.",

author = "Jo, {Yeon Hwa} and Mohanty, {Bhaskar Chandra} and Yeon, {Deuk Ho} and Lee, {Seung Min} and Cho, {Yong Soo}",

note = "Funding Information: This work was financially supported by a grant (no. 2011-0020285 ) from the National Research Foundation of Korea funded by the Korean government . Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

year = "2015",

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doi = "10.1016/j.solmat.2014.08.043",

language = "English",

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AU - Jo, Yeon Hwa

AU - Mohanty, Bhaskar Chandra

AU - Yeon, Deuk Ho

AU - Lee, Seung Min

AU - Cho, Yong Soo

N1 - Funding Information: This work was financially supported by a grant (no. 2011-0020285 ) from the National Research Foundation of Korea funded by the Korean government . Publisher Copyright: © 2014 Elsevier B.V. All rights reserved.

PY - 2015/1

Y1 - 2015/1

N2 - A simple single elementary target sputtering method is proposed as an alternative to the multi-target sputter approach for preparing Cu2ZnSnSe4 absorber films. Several single targets utilizing excess Cu and Zn, including Cu2ZnSnSe4, Cu2Zn1.5SnSe4, Cu2.5Zn1.5SnSe4 and Cu3Zn1.5SnSe4, were investigated to determine the absorber film with the most promising structural and photovoltaic performance. A conversion efficiency of ~4.16% was obtained from the Cu2.5Zn1.5SnSe4 single target, which displayed well-defined grain structures with desirable Zn/Sn and Cu/(Zn+Sn) ratios. Critical roles of excess Cu and Zn during sputtering are discussed in conjunction with microstructural evolution, elemental distribution, photovoltaic characteristics and grain boundary contributions, which are specified for the sputtering method.

AB - A simple single elementary target sputtering method is proposed as an alternative to the multi-target sputter approach for preparing Cu2ZnSnSe4 absorber films. Several single targets utilizing excess Cu and Zn, including Cu2ZnSnSe4, Cu2Zn1.5SnSe4, Cu2.5Zn1.5SnSe4 and Cu3Zn1.5SnSe4, were investigated to determine the absorber film with the most promising structural and photovoltaic performance. A conversion efficiency of ~4.16% was obtained from the Cu2.5Zn1.5SnSe4 single target, which displayed well-defined grain structures with desirable Zn/Sn and Cu/(Zn+Sn) ratios. Critical roles of excess Cu and Zn during sputtering are discussed in conjunction with microstructural evolution, elemental distribution, photovoltaic characteristics and grain boundary contributions, which are specified for the sputtering method.

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