JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2018
·Vol. 29
·期 15
·12824-12829
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IF 2.324
Ruan Chengzhi,Tao Jiahua,Zhu Chengyun,Chen Chen
In this work, potassium-containing Cu 2 SnS 3 thin films (K x Cu 2−x SnS 3 ) were fabricated by a simple and low-cost ultrasonic spray pyrolysis method on glass substrates with different potassium doping concentration. Effects of various potassium concentrations on the structural, morphological and optical properties of the films were systematically investigated. The results indicate that potassium doping can well enhance the growth of particle size and decrease the band gap of the film from to 1.55 to 1.26 eV. Solar cell devices with a structure of glass/FTO/K 2−x Cu 2 SnS 3 /CdS/ZnO/AZO have been prepared and obvious solar cell device performance improvement has been observed by 2 at% potassium doping. This potassium-containing Cu 2 SnS 3 thin films could be a promising absorber material for high efficiency solar cell.
研究领域:
材料科学
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光伏技术
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薄膜技术
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DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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2016
·Vol. 2016
·期 22
·3634-3640
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IF 2.686
Qingshuang Liang
In this work, it is shown that both pure zincblende and wurtzite structures of Cu 2 SnS 3 (CTS) nanocrystals (NCs) have been synthesized by a facile one-spot heating-up procedure. By controlling the solvent ratios, different phase components of zincblende and wurtzite mix-phase CTS NCs were also obtained. The effect of different precursors and surfactants on the phase selectivity of CTS NCs was investigated, and a phase-controlled mechanism is proposed: the crystal structures of the resulting CTS NCs are related to the initial structure forms of the Cu x S seeds, and the different phase structures are formed as a result of the initial redox conditions. When the reaction was conducted under reducing conditions, Cu 2 S (or Cu 31 S 16 ) seeds were formed, leading to the formation of wurtzite CTS nanocrystals. When the conditions were less reducing, the initial CuS (or Cu 1.84 S) seeds resulted in the zincblende structure CTS nanocrystals. Graphical Different phase components of zincblende and wurtzite mix-phase Cu 2 SnSe 3 nanocrystals (NCs) were obtained. The phase selectivity of the Cu 2 SnSe 3 NCs is related to the initial redox conditions. Wurtzite Cu 2 SnSe 3 NCs formed because of the Cu 31 S 16 seeds, and the CuS seeds led to zincblende structure Cu 2 SnSe 3 NCs.
研究领域:
材料化学
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纳米材料
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晶体生长
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半导体纳米晶
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Zijun Yi,Long Zhang,Asif Al Jaman,Hui Li,Fang Ding,Yingjie Cai,Xuehong Ren
The development of low-cost and environmentally friendly light-absorbing materials has emerged as important direction in photovoltaic (PV) technologies. Among these candidates, Cu 2 SnS 3 (CTS) material has attracted considerable interest due to the favorable band gap, strong absorption coefficient, and non-toxic elemental composition. However, the efficiency of CTS devices remains hindered by cation disorder, deep-level defects and poor film quality, indicating the need for green and controllable approaches capable of preparing high-performance CTS films. Based on this, this work developed a green mechanochemical wet ball milling strategy. By milling Cu 2 O and SnO in a deionized water/isopropanol (IPA) medium, a uniform precursor dispersion was obtained, enabling the formation of dense CTS absorber layers through spin coating followed by sulfurization. To further tune the local chemical environment, a small amount of TiO 2 was incorporated to partially replace SnO. Benefiting from the similar ionic radii and valence states of Ti 4 + and Sn 4+ , the isovalent substitution effectively adjusted the local coordination structure and reduced Sn-related deep-level defects. The optimized device delivered a marked improvement in photoelectric conversion efficiency (PCE), increasing from 4.68 % to 6.29 %, along with an open-circuit voltage ( V OC ) of 0.47 V that ranked among the highest values reported for CTS-based solar cells. This work demonstrated the effectiveness of mechanochemical methods combined with cation regulation in improving the quality and performance of CTS films, providing an effective pathway for developing green and sustainable thin-film solar cells.
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产品关联
DOI
高影响因子
Materials Today Energy
·
2020
·
IF 5.604
Jun Xu,Rixin Wang,Xing Chen,Ru Zhou,Junjun Zhang
Copper-containing bimetallic sulfides are regarded as an emerging low-cost catalyst for electrocatalytic hydrogen generation. In this work, we report for the first time the ternary Cu 2 SnS 3 (CTS) nanocrystals anchored reduced graphene oxide (rGO) nanosheets (CTS@rGO) as a superior electrocatalyst for efficient hydrogen generation. The CTS nanocrystals with 5–10 nm are much homogeneously distributed on the surface of rGO nanosheets. In the CTS@rGO composite, the rGO works as a robust scaffold that can effectively suppress aggregation of the CTS nanocrystals and ensure more exposed active sites on CTS surfaces. Furthermore, the conductive rGO is beneficial to fast charge transfer. Therefore, the CTS@rGO catalyst possesses a large electrocatalytic active surface area and a small charge transfer resistance. As a result, the CTS@rGO exhibits significantly enhanced catalytic activity for hydrogen evolution reaction (HER) in both the acid and alkaline electrolytes in comparison with the pristine CTS nanocrystals. The CTS@rGO delivers a striking catalytic kinetic metrics of a small Tafel slope of 54 mV dec −1 , a low overpotential of 252 mV at a current density of 10 mA cm −2 , long operation stability of 4 day in the acid electrolyte.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Min Yang,Xiaojuan Huang,Liquan Yao,Limei Lin,Aicheng Chen,Yongqing Chen,Yuliang Che,Shuiyuan Chen,Xiangkai Kong,Guilin Chen
Molecular solution with the metal-thiourea complex is a facile and effective route for Cu 2 SnS 3 (CTS) thin film deposition . However, its stability is still challenging due to flexible metal salts precursors. Here we report a strategy to enhance the stability of the Cu–Sn–S molecular solution that use bivalent Sn to suppress the oxidation of the S 2- of thiourea via the redox reaction . The self-stabilizing mechanism has been carefully revealed by the systematic experiments and confirmed by the spontaneous reaction process of metal-thiourea system. It demonstrates that Sn with a low valence state weakens the transfer of lone pair electrons from thiourea to Cu 2+ and Sn 4+ ions, alleviating the sulfur precipitates from thiourea oxidation because of the easily reducible character of Sn 2+ ion. The solution with Sn 2+ antioxidant additive can be stored for a long time under air ambient, which is then spin-coated and sulfurized with Sn powder compensation. The uniform CTS thin film with composition control is finally achieved and delivers a device efficiency of 1.15%. This work provides a guide on stabilizing the solution precursor for chalcogenide thin film deposition.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2015
·
IF 2.999
Yong Cui,Zhe Zhang,Xu Du,Wei Liu,Yulin Deng,Shi Liu,Gang Wang
Ternary metastable wurtzite structure Cu 2 SnS 3 nanocrystals were successfully synthesized via solvothermal way. As-synthesized Cu 2 SnS 3 nanocrystals were characterized in detail by X-ray powder diffraction, energy dispersive X-ray spectrometry, UV–Vis–NIR spectrometry and transmission electron microscopy . Hybrid solution has been obtained by mixing Cu 2 SnS 3 nanocrystals ink and Zn molecule precursor solution. Hybrid solution process was used to fabricate Cu 2 ZnSn(S,Se) 4 thin film .
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）