JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 19
·17036-17043
·
IF 2.22
Zhi Guowei,Wang Wei,Zhang Ming,Hao Lingyun,Yang Lu,Liu Jijinhua,Zhao Yijie
In this work, a synergy structure to improve the photocatalytic properties of materials was proposed. CuSbS 2 nanoparticles synthesized by microwave irradiation method were dispersed in TiO 2 sol to form CuSbS 2 –TiO 2 nanoparticles. The properties of composite materials with different TiO 2 sol concentration were investigated by XRD, XPS, etc. The results indicated the as-synthesized CuSbS 2 nanoparticles exhibited chalcostibite structure and the TiO 2 showed anatase phase. The CuSbS 2 –TiO 2 nanoparticles had high absorbance in the visible light and good photocatalysts for the photodegradation reaction of Rhodamine B (RhB). When TiO 2 sol concentration was 0.23 mol/L, the sample possessed a photocatalytic degradation rate of 0.002 min −1 for the degradation of RhB, which was 3 times higher than that by the bare amorphous TiO 2 (0.0007 min −1 ).
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2022
·
IF 7.188
Wen-Wei Lin,Ning-Wei Wang,Ze-Ying Lan,Zhi-Ping Huang,Li-Mei Lin,Qing-Ying Ye,Shui-Yuan Chen,Gui-Lin Chen
Copper antimony sulfur (CuSbS 2 ) possesses a band gap of about 1.5 eV, high absorption coefficient of > 10 4 cm −1 and abundant compositions, which is considered as one of the potential photovoltaic absorbers. In this work, we propose a facile ion-exchange assisted chemical bath deposition (IEACBD) method, which uses Cu + to replace Sb 3+ from the matrix of Sb 2 S 3 and then combine into CuSbS 2 alloy. Through systematic study, we found that this ion-exchange is a simultaneous interdiffusion process of Cu + and Sb 3+ ions, which enables a uniform mixture of those two elements. But it also inevitably produces a Sb 2 O 3 by-product on the surface of the film because of the alkaline environment of this chemical bath. To further remove it, we introduce a mild etching process with BDCA solution for Sb 2 O 3 and then obtain a high-quality CuSbS 2 . Finally, we assemble an inorganic CuSbS 2 solar cell with the architecture of FTO/TiO 2 /CdS/CuSbS 2 /Carbon/Ag, and delivering a photoelectric conversion efficiency of 0.75 %. This enriches the preparation method of CuSbS 2 thin film and also provides guidance for the synthesis of the similar multiple chalcogen compounds.
研究领域:
材料科学
·
太阳能
·
化学
·
纳米技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Lijuan Fu,Junsheng Yu,Jinsong Wang,Fan Xie,Shun Yao,Yongsong Zhang,Jiang Cheng,Lu Li
CuSbS 2 has been considered as a promising photovoltaic absorber material, due to its earth abundant and environmentally friendly constituents. However, the electron affinity and similar radius of cations bring heavy atomic disorders in CuSbS 2 film, limiting its photovoltaic performance. Herein, we report an efficient way to reduce disorders by introducing Ag atom into CuSbS 2 crystal structure. The crystal structure and chemical analysis confirm that Ag occupies the Cu position in the as-prepared films by the spray pyrolysis. The absorption spectra combined with photoluminescence measurement indicate that Ag-substituted CuSbS 2 films have fewer recombination centers. The density functional theory calculation result reveals that Ag-substituted CuSbS 2 has a more stable crystal structure, and the formation energy of the primary point defects obviously increases. Therefore, Ag-substituted CuSbS 2 photovoltaic device shows asignificantly improved power conversion efficiency from 0.73% to 2.48%.
研究领域:
材料科学
·
光伏技术
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
ECS Solid State Letters
·
2014
·Vol. 3
·期 9
·Q41
·
IF 0.781
Mengmeng Hao,Yike Liu,Fangzhou Zhou,Liangxing Jiang,Fangyang Liu,Jie Li
CuSbS2 nanocrystals, synthesized via hot-injection method using oleylamine (OLA) as solvent, exhibited brick-like shape and were recognized as chalcostibite, verified by transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. A high-performance photodetector based on a hybrid film of CuSbS2 nanocrystals and poly (3-hexylthiophene) was constructed. The device showed distinct "ON" and "OFF" states with a ratio of >5 in photocurrents responding to illumination. The high sensitivity and stability of the hybrid device reveals a broad prospect for use of the hybrid material in light detection and signal magnification. In industry, the hybrid material would be a good choice for large-area, low-cost, lightweight, and foldable products.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2022
·Vol. 9
·期 11
·115503
·
IF 2.025
Liu Liu,Yijie Zhao,Guowei Zhi,Lihui Cao,Wei Wang,Luanhong Sun,Yuxuan Che
CuSbS2 is a direct p-type semiconductor with a two-dimensional layered structure of orthorhombic system, excellent electrical performance, and a band gap of 1.1–1.5 eV, which has a light absorption coefficient of more than 104cm−1 in the visible light range. CuSbS2 particles were synthesized by microwave irradiation method, and the effects of different sulfur sources on the phase structure, morphology and electrochemical performance of CuSbS2 particles were studied. The results showed that the sample prepared by thiourea as sulfur source was CuSbS2 phase, and the morphology was composed of flower-like microspheres and rod-like particles. However, nanorod-like CuSbS2 particles were obtained using L-cysteine or 3-thiopropionic acid as sulfur sources, and the phase of samples contained CuSbS2 and Sb2S3 phase. Electrochemical tests showed that L-cysteine based CuSbS2 particles had the largest photocurrent response, a photocurrent density of 1.03 μA cm−2 and impedance of 14.66 Ω.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 6
·2865-2873
·
IF 2.961
Zhi Guowei,Wang Wei,Yang Lu,Sun Luanhong,Hao Lingyun,Tang Zhengxia,Lin Qing,Yao Hanyu
Due to high theoretical capacity and low cost of CuSbS 2 , it is deemed to be one of the most promising anode materials for lithium-ion batteries (LIBs). In this paper, the effects of different Cu/Sb ratios on the properties of composites prepared by one-step microwave irradiation method were studied. The results showed the increasement of Cu element could improve conductivity of anode material and the structure stability to reduce the capacity loss. And increasing composition of Cu element also could improve the initial columbic efficiency. The best initial discharge capacity was as high as 3001.9 mA hg −1 , and even the specific capacity still kept 215.8 mA hg −1 after 120 cycles, which was got at 1:3 of Cu/Sb ratio. This work provides a method for the Cu/Sb ratio effect of the performance for the LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2020
·Vol. 22
·期 9
·1-11
·
IF 2.132
Wang Wei,Zhi Guowei,Liu Jijinhua,Hao Lingyun,Yang Lu,Zhao Yijie,Hu Yingfei
In the paper, the effects of polyvinylpyrrolidone (PVP) concentration and chemical wet etching on morphologies and phase composition of CuSbS 2 particles synthesized by microwave irradiation method were investigated. The phase structure, morphologies, and optical and photocatalytic properties were analyzed by using characterization techniques. The results showed that the morphology of as-prepared particles was spherical and the shape of particles etched in Na 2 S solution was tetragonal rod-like structure. The optical band gap of the particles with 1.5 g PVP after chemical etching was about 1.41 eV. The photocatalytic performance of CuSbS 2 could be significantly improved after Na 2 S chemical etching. The amounts of PVP had an obvious influence on specific surface area of as-synthesized CuSbS 2 particles. The CuSbS 2 particles with 1.5 g PVP had the best photocatalytic performance after chemical etching treatment, and the C / C 0 value reached 0.36.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Wei Wang,Qinyang Sheng,Guowei Zhi,Yuan Zhao,Ruiyang Qu,Luanhong Sun,Shengli Zhang
Photocatalytic technology based on heterojunction structure has been proved to be an effective way to solve environmental pollution and energy crisis. The effective carrier concentration plays an important role in improving the performance of heterojunction photocatalyst. In this work, CuSbS 2 (CAS)-CdS-ZnO was prepared by simple 3-steps microwave irradiation method to reveal the influence of energy band structure on photocatalytic performance. Adding CdS could regulate band alignment to translate the “cliff-like” conduction band offset of CAS-ZnO to “spike-like”. That could effectively reduce the carrier recombination rate to improve the photocatalytic degradation activity, which could completely degraded Rhodamine B (RhB) after 80 min under a solar simulation, highest rate constant (0.02028 min −1 ) and good stability. Furthermore, the transformation of charge transfer mechanism from the Z-type to Ⅱ-type by adding CdS were confirmed by experiments and density functional theory (DFT) calculations. This change could raise the energy level of photoelectrons, resulting in CAS-CdS-ZnO with a certain photocatalytic hydrogen evolution capacity (42.37 μmol g −1 h −1 ). This work reveals the important role of band structure in photocatalytic properties and applications of heterojunction.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Rong-Rong Su,Yu-Xiang Yu,Yong-Hao Xiao,XianFeng Yang,Wei-De Zhang
CuSbS 2 is regarded as a promising photo-absorber for solar energy conversion due to its proper bandgap, high absorptivity and earth abundance. Herein, novel low-cost ZnO/CdS/CuSbS 2 core-shell nanowire arrays were constructed as photoanode for hydrogen evolution through non-aqueous electrodeposition and cation exchange. The nanowire demonstrates even and compact multilayer structure. The optimal ZnO/CdS/CuSbS 2 photoanode achieves a photocurrent of 6.48 mA/cm 2 at 0 V versus Ag/AgCl and the remarkable IPCE value with approximately 52% at 480 nm in an electrolyte solution containing 0.35 mol/L Na 2 SO 3 and 0.25 mol/L Na 2 S. It also exhibited a good stability, maintained 87.9% of the initial current after 1 h measurement. The high performance benefits from well-crystalline and compact multilayer structure, high absorptivity of CuSbS 2 and CdS, p-n junction formed between CdS and CuSbS 2 which promotes the electron-hole separation and ZnO nanowire array as three dimensional scaffolds for electron percolation pathway. This work suggests the potential applications of low-cost p-n junction core-shell nanowire arrays as a highly efficient photoanode for hydrogen evolution in oil-field waste water with reductive sulfide.
研究领域:
材料科学
·
能源转换
·
光电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2022
·Vol. 24
·期 5
·1-10
·
IF 2.533
Wang Wei,Zhi Guowei,Liu Liu,Cao Lihui,Xie Jing,Sun Luanhong,Hao Lingyun,Yao Hanyu
CuSbS 2 particles could be rapidly prepared by the microwave-assisted liquid phase method. Polyethylene glycol (PEG) was used as the directing agent for morphology and structure of CuSbS 2 particles. Microwave irradiation could induce Cu 2+ , adsorbed on PEG chain structure, to reduce as Cu + . In the further reaction, the rod-like structure of CuSbS 2 was formed. The results showed that the CuSbS 2 particles prepared by the PEG400 structure directing agent had a higher first discharge specific capacity (~1499.6 mAh g −1 ) and excellent electronic and ionic conductivity. This method provides a new idea for the morphology control of anode materials for high energy density lithium batteries.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2015
·
IF 4.891
Hongling Guo,Yong Cui,Qingwen Tian,Shang Gao,Gang Wang,Daocheng Pan
The Cu2ZnSn(S,Se)4 (CZTSSe) has gained extensive attention in thin film solar cells due to their potential as a nontoxic, low-cost, and earth-abundant absorber material, and a rapid increase in power conversion efficiencies has been demonstrated in laboratory. Compared with the most successful hydrazine-based solution process, the nanocrystal-based ink method and non-hydrazine molecular precursor solution approach are more eco-friendly for fabricating high-efficiency CZTSSe solar cells. However, it is hard to obtain a complete large-grain CZTSSe absorber thin film which can facilitate the transport of photogenerated carriers while minimize grain boundary recombination. Here, we present a simple and effective strategy to significantly enhance grain growth of CZTSSe absorber layers by insetting Sb2S3, CuSbS2, and NaSb5S8 thin films. The incorporation of Sb-based thin films can induce grain growth in the selenization process, and did not produce the impurity phase confirmed by XRD patterns and Raman spectra. It was found that the order of the crystal growth promotion ability is Sb2S3 > CuSbS2 > NaSb5S8 under the same experimental conditions. The presented approach can be extended to other solution processes of fabricating CZTSSe solar cells to enhance their microstructural properties, which are critical for applications in CZTSSe absorbers with fine-grain layers.
研究领域:
材料科学
·
光伏技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 29
·e202202457
·
IF 2.307
Guowei Zhi,Lingyun Hao,Wenjing Chen,Qinyang Sheng,Liu Liu,Wei Wang,Hanyu Yao
Graphical In this work, an effective and solar light-driven Z-scheme heterojunction photocatalyst CAS/ZnO was prepared by two steps microwave irradiation method. As the ZnO concentration increased, the absorbance decreased but the specific surface area increased. 3 M displayed the highest degradation rate (100 %), highest rate constant (0.021 min −1 ) and optimum stability. Also, mechanism of the Z-scheme migration of photon-generated carrier and photocatalytic degradation was proposed. This paper provides a new Z-scheme heterojunction CAS/ZnO photocatalyst for the treatment of organic pollutants The heterojunction structure photocatalysts are very promising for photocatalytic degradation dyes to resolve the organic industrial wastewater. In this work, an effective and solar light-driven Z-scheme heterojunction photocatalyst CAS/ZnO was prepared by two steps microwave irradiation method. The ZnO nanosheets were successfully compounded with CAS tetragonal particles aggregate. As the ZnO concentration increased, the absorbance decreased but the specific surface area increased. Rhodamine B (RhB) was tested for photodegradation by photocatalysts under a solar simulation in 120 min, and 3 M displayed the highest degradation rate (100 %), highest rate constant (0.021 min −1 ) and optimum stability. Furthermore, the main reactive species were superoxide radicals (O 2 −. ) and hydroxyl radicals (HO⋅). Also, mechanism of the Z-scheme migration of photon-generated carrier and photocatalytic degradation was proposed. This paper provides a new Z-scheme heterojunction CAS/ZnO photocatalyst for the treatment of organic pollutants.
研究领域:
环境科学
·
材料科学
·
光催化
·
废水处理
✓ 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）