An efficient Cr-doping strategy to optimize the solution-processed Cu2ZnSn(S,Se)4 solar cells for better optoelectronic performance

Ma, Meiling; Sui, Yongming; Zeng, Fancong; Zhao, Na; Wang, Tianyue; Wang, Zhanwu; Yang, Lili; Wang, Fengyou; Ye, Bin

doi:10.1016/j.jallcom.2022.166476

Cited by 10 publications

(2 citation statements)

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“…CZTSSe has been subjected to more than a few cation substitution strategies for the factors mentioned above. Cu–Zn disorder-related defects can be effectively suppressed by substituting Li or Ag for Cu. , Currently, partial substitution of Zn was the most reported, indicating that Mn, Cr, and Co, , and other elements can enter the lattice, partially replacing Zn in part. Ge, Si, and Bi are primarily involved in the study of substituting a cationic for Sn in CZTSSe. , Typically, the Sn-associated deep-level defects have the greatest influence on the V OC of CZTSSe devices, including Sn Zn antisites and related [Cu Zn + Sn Zn ] clusters .…”

Section: Introductionmentioning

confidence: 99%

“…Cu−Zn disorder-related defects can be effectively suppressed by substituting Li or Ag for Cu. 14,15 Currently, partial substitution of Zn was the most reported, indicating that Mn, Cr, and Co, 16,17 and other elements can enter the lattice, partially replacing Zn in part. Ge, Si, and Bi are primarily involved in the study of substituting a cationic for Sn in CZTSSe.…”

Section: ■ Introductionmentioning

confidence: 99%

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Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Wang,

Sui,

et al. 2023

ACS Appl. Nano Mater.

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In recent years, Cu 2 ZnSnS 4 (CZTS)-based thin-film solar cells have received extensive attention for the optimization of grain growth and the suppression of defects by cation replacement. In this work, we report for the first time the replacement of stannum (Sn) atoms with antimony (Sb) doped into the lattice by solution treatment. Cu 2 ZnSb x Sn 1−x (S, Se) 4 (0 ≤ x ≤ 0.2) (CZTSSSe) thin films are synthesized on soda lime glass substrates by sol−gel and two-step annealing techniques. The Sb doping strategy and the structural, morphological, optical, and electrical properties of CZTSSSe films are described. According to SEM results, it was found that the CZTSSSe (x = 0) thin film is composed of nanoscale small grains, and the right amount of Sb doping encourages grain growth, allowing for the fabrication of dense CZTSSSe films with bigger grain sizes and fewer holes. When x = 0.10, the best outcomes were attained. Sb successfully replaces the Sn sites, which decreases the production of harmful defects associated with Sn and enhances the electrical properties of thin films to improve carrier mobility. The open circuit voltage (V OC ) of the CZTSSSe (x = 0.10) device increased by 29 mV as compared to the pure Cu 2 ZnSn(S, Se) 4 (CZTSSe) device, and its power conversion efficiency (PCE) increased from 5.06 to 6.82%. These outcomes exhibit the potential of Sb in enhancing the PCE of CZTSSe-based devices.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Wang,

Sui,

et al. 2023

ACS Appl. Nano Mater.

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Synergistic Crystallization Modulation and Defects Passivation in Kesterite via Anion‐Coordinate Precursor Engineering for Efficient Solar Cells

Wang,

Chu,

Zhou

et al. 2024

Advanced Science

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It has been validated that enhancing crystallinity and passivating the deep‐level defect are critical for improving the device performance of kesterite Cu2ZnSn(S,Se)4 (CZTSSe) solar cells. Coordination chemistry interactions within the Cu‐Zn‐Sn‐S precursor solution play a crucial role in the management of structural defects and the crystallization kinetics of CZTSSe thin films. Therefore, regulating the coordination environment of anion and cation in the precursor solution to control the formation process of precursor films is a major challenge at present. Herein, a synergetic crystallization modulation and defect passivation method is developed using P2S5 as an additive in the CZTS precursor solution to optimize the coordination structure and improve the crystallization process. The alignment of theoretical assessments with experimental observations confirms the ability of the P2S5 molecule to coordinate with the metal cation sites of CZTS precursor films, especially more liable to the Zn2+, effectively passivating the Zn‐related defects, thereby significantly reducing the defect density in CZTSSe absorbers. As a result, the device with a power conversion efficiency of 14.36% has been achieved. This work provides an unprecedented strategy for fabricating high‐quality thin films by anion‐coordinate regulation and a novel route for realizing efficient CZTSSe solar cells.

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Synergistic Effect of Ag, Sb Dual‐Cation Substitution on Cu₂ZnSn (S, Se)₄ High‐Efficiency Solar Cells

Wang,

Sui,

Miao

et al. 2024

Progress in Photovoltaics

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The poor crystal quality inside an absorber layer and the presence of various harmful defects are the main obstacles restricting the properties of Cu2ZnSn (S, Se)4 (CZTSSe) thin‐film solar cells. Cation doping has attracted considerable research attention as a viable strategy to overcome this challenge. In this paper, based on Sb‐substituted CZTSSe system, we prove that Ag partially substituting Cu may be a feasible strategy. After a series of characterization of the films, it was discovered that the crystal quality and crystallinity of the films were further improved by introducing Ag into Cu2Zn(Sb, Sn) (S, Se)4 (CZTSSSe), and the concentrations of CuZn accepter defects and 2[CuZn + SnZn] defect clusters were effectively inhibited. At the same time, the carrier concentration is increased. The results show that when the Ag doping ratio is 15%, the photovoltaic conversion efficiency (PCE) reaches 8.34%, compared with the single‐doped Sb element, the efficiency is increased by 24%. For the first time, this study investigates the collaborative effect of Sb, Ag dual‐cation substitution in CZTSSe. The solar cell performance enhancement mechanism offers new potential for the advancement of CZTSSe thin‐film solar cell technology in the future.

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An efficient Cr-doping strategy to optimize the solution-processed Cu2ZnSn(S,Se)4 solar cells for better optoelectronic performance

Cited by 10 publications

References 46 publications

Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Synergistic Crystallization Modulation and Defects Passivation in Kesterite via Anion‐Coordinate Precursor Engineering for Efficient Solar Cells

Synergistic Effect of Ag, Sb Dual‐Cation Substitution on Cu₂ZnSn (S, Se)₄ High‐Efficiency Solar Cells

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An efficient Cr-doping strategy to optimize the solution-processed Cu2ZnSn(S,Se)4 solar cells for better optoelectronic performance

Cited by 10 publications

References 46 publications

Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Sb Doping Strategy to Promote Growth and Suppress Defects in Solution-Processed CZTSSe Solar Cells for Improved Optoelectronic Performance

Synergistic Crystallization Modulation and Defects Passivation in Kesterite via Anion‐Coordinate Precursor Engineering for Efficient Solar Cells

Synergistic Effect of Ag, Sb Dual‐Cation Substitution on Cu2ZnSn (S, Se)4 High‐Efficiency Solar Cells

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Product

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Synergistic Effect of Ag, Sb Dual‐Cation Substitution on Cu₂ZnSn (S, Se)₄ High‐Efficiency Solar Cells