Compositional Engineering of Antimony Chalcoiodides via a Two-Step Solution Process for Solar Cell Applications

Kang Won Jung; Yong Chan Choi

doi:10.1021/acsaem.1c02676

Compositional Engineering of Antimony Chalcoiodides via a Two-Step Solution Process for Solar Cell Applications

Kang Won Jung, Yong Chan Choi

Division of Energy Techonology

Daegu Gyeongbuk Institute of Science and Technology

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

12 Scopus citations

Abstract

Antimony chalcoiodide, Sb(S,Se)I, has recently gained considerable attention as an alternative to Pb-based perovskites in next-generation solar cells. In this work, we propose an effective solution-processing method for fabricating Sb(S,Se)I alloy films with various S/Se ratios for solar cell applications. The proposed method involves two steps: the formation of Sb₂(S,Se)₃ (step I) and its conversion to Sb(S,Se)I (step II). We introduced an additional deposition step based on a SbCl₃-selenourea solution in step I to fabricate Sb(S,Se)I alloy with tunable properties. We controlled the growth of Sb(S_1−xSe_x)I films (0 ≤ x ≤ 1) and investigated the effects of the S/Se molar ratio on the bandgap, crystalline phase, morphology, and electronic structure. Further, based on the results, we propose suitable electron- and hole-transporting layers for constructing antimony chalcoiodide solar cells. This study highlights the potential of Sb(S,Se)I as a solar absorber and provides some clues to construct Sb(S,Se)I solar cells.

Original language	English
Pages (from-to)	5348-5355
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	5
Issue number	5
DOIs	https://doi.org/10.1021/acsaem.1c02676
State	Published - 23 May 2022

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society.

Keywords

SbSI
SbSeI
antimony chalcoiodide
compositional engineering
lead-free solar cells
solution process
two-step method

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10.1021/acsaem.1c02676

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title = "Compositional Engineering of Antimony Chalcoiodides via a Two-Step Solution Process for Solar Cell Applications",

abstract = "Antimony chalcoiodide, Sb(S,Se)I, has recently gained considerable attention as an alternative to Pb-based perovskites in next-generation solar cells. In this work, we propose an effective solution-processing method for fabricating Sb(S,Se)I alloy films with various S/Se ratios for solar cell applications. The proposed method involves two steps: the formation of Sb2(S,Se)3 (step I) and its conversion to Sb(S,Se)I (step II). We introduced an additional deposition step based on a SbCl3-selenourea solution in step I to fabricate Sb(S,Se)I alloy with tunable properties. We controlled the growth of Sb(S1−xSex)I films (0 ≤ x ≤ 1) and investigated the effects of the S/Se molar ratio on the bandgap, crystalline phase, morphology, and electronic structure. Further, based on the results, we propose suitable electron- and hole-transporting layers for constructing antimony chalcoiodide solar cells. This study highlights the potential of Sb(S,Se)I as a solar absorber and provides some clues to construct Sb(S,Se)I solar cells.",

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author = "Jung, {Kang Won} and Choi, {Yong Chan}",

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AU - Jung, Kang Won

AU - Choi, Yong Chan

PY - 2022/5/23

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N2 - Antimony chalcoiodide, Sb(S,Se)I, has recently gained considerable attention as an alternative to Pb-based perovskites in next-generation solar cells. In this work, we propose an effective solution-processing method for fabricating Sb(S,Se)I alloy films with various S/Se ratios for solar cell applications. The proposed method involves two steps: the formation of Sb2(S,Se)3 (step I) and its conversion to Sb(S,Se)I (step II). We introduced an additional deposition step based on a SbCl3-selenourea solution in step I to fabricate Sb(S,Se)I alloy with tunable properties. We controlled the growth of Sb(S1−xSex)I films (0 ≤ x ≤ 1) and investigated the effects of the S/Se molar ratio on the bandgap, crystalline phase, morphology, and electronic structure. Further, based on the results, we propose suitable electron- and hole-transporting layers for constructing antimony chalcoiodide solar cells. This study highlights the potential of Sb(S,Se)I as a solar absorber and provides some clues to construct Sb(S,Se)I solar cells.

AB - Antimony chalcoiodide, Sb(S,Se)I, has recently gained considerable attention as an alternative to Pb-based perovskites in next-generation solar cells. In this work, we propose an effective solution-processing method for fabricating Sb(S,Se)I alloy films with various S/Se ratios for solar cell applications. The proposed method involves two steps: the formation of Sb2(S,Se)3 (step I) and its conversion to Sb(S,Se)I (step II). We introduced an additional deposition step based on a SbCl3-selenourea solution in step I to fabricate Sb(S,Se)I alloy with tunable properties. We controlled the growth of Sb(S1−xSex)I films (0 ≤ x ≤ 1) and investigated the effects of the S/Se molar ratio on the bandgap, crystalline phase, morphology, and electronic structure. Further, based on the results, we propose suitable electron- and hole-transporting layers for constructing antimony chalcoiodide solar cells. This study highlights the potential of Sb(S,Se)I as a solar absorber and provides some clues to construct Sb(S,Se)I solar cells.

KW - SbSI

KW - SbSeI

KW - antimony chalcoiodide

KW - compositional engineering

KW - lead-free solar cells

KW - solution process

KW - two-step method

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JO - ACS Applied Energy Materials

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Compositional Engineering of Antimony Chalcoiodides via a Two-Step Solution Process for Solar Cell Applications

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