Band-gap tunable (Cu2Sn)x/3Zn1−xS nanoparticles for solar cells

Dai, Pengcheng; Shen, Xiangna; Lin, Zhaojun; Feng, Zhenyu; Xu, Hongji; Zhan, Jinhua

doi:10.1039/c0cc00899k

Cited by 106 publications

(83 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4(a) shows the Cu 2p XPS spectra of all sulfurized samples. There are two peaks located at 952.17 and 932.95 eV, with 19.84-eV peak separations, indicating the formation of Cu + for all sulfurized samples [27,28]. On the other hand, the peak observed at 932.25 eV is attributed to the Cu 2-X S phase for the CZTS 0.02 sample (Fig.…”

Section: Resultsmentioning

confidence: 80%

See 1 more Smart Citation

Improved photoelectrochemical performance of Cu2ZnSnS4 (CZTS) thin films prepared using modified successive ionic layer adsorption and reaction (SILAR) sequence

Suryawanshi

Shin²,

Ghorpade

et al. 2014

Electrochimica Acta

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 80%

“…4(b) suggest the presence of Zn 2+ for all sulfurized samples [27,28]. The Sn 3d core peaks at 494.65 and 486.35 eV can be attributed to Sn 4+ [27,28] (Fig. 4(c)).…”

Section: Resultsmentioning

confidence: 82%

Improved photoelectrochemical performance of Cu2ZnSnS4 (CZTS) thin films prepared using modified successive ionic layer adsorption and reaction (SILAR) sequence

Suryawanshi

Shin²,

Ghorpade

et al. 2014

Electrochimica Acta

View full text Add to dashboard Cite

“…4b, the Cu 2p core level spectrum exhibits two peaks at approximately 932.5 eV and 952.5 eV, which are assigned to 2p 3/2 and 2p 1/2 core levels of Cu 1+ , respectively. [21][22][23] Additionally, the "shake-up" satellites at approximately 945 eV and 965 eV for the Cu 2p 3/2 and 2p 1/2 core levels, respectively, are associated with the existence of Cu 2+ . 19,27 The XRD, TGA, and XPS results demonstrate the occurrence of chemical bonds between Cu and S in the electrode with Cu as the current collector, which indicates that the S is not only physically loaded on the Cu current collector but also chemically interacts with the Cu substrate by forming of copper sulfides with the mixed valence states of Cu 1+ and Cu 2+ ions.…”

Section: Resultsmentioning

confidence: 99%

“…This is consistent with the 160-164 eV range expected for S in sulfide phases. [21][22][23] It is reported that the monolayer of S enhances surface self-diffusion on Cu (111) by several orders of magnitude. 24 Cu n S m clusters form more readily on Cu (111) when compared to a Cu adatom and diffuse easily during the adsorption of sulfur on Cu (111).…”

Section: Resultsmentioning

confidence: 99%

Application of a Sulfur Cathode in Nucleophilic Electrolytes for Magnesium/Sulfur Batteries

Zeng

Wang

Yang

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

We report the potential feasibility of a high-capacity and low-cost sulfur cathode that is compatible with nucleophilic electrolytes for Mg/S batteries. The electrochemical performance of sulfur in an easily prepared (PhMgCl) 2 -AlCl 3 /THF nucleophilic electrolyte depends on cathode current collectors. A sulfur cathode that uses Cu as a current collector, which is electrochemically stable in the range of operating voltage, exhibits an initial discharge capacity approximately corresponding to 659 mAh g −1 , and maintains a reversible capacity of 113 mAh g −1 after 20 cycles at a current density of 10 mA g −1 . It is different from the sulfur cathode with few capacities that uses stainless-steel as a current collector. Copper sulfides formed when sulfur is coated on a Cu current collector at 50 • C provide a strong chemical interaction between Cu and sulfur, which protects sulfur and increases its compatibility with the electrolyte. A metal-stabilized sulfur cathode provides an effective approach to improve the electrochemical performance of Mg/S batteries in nucleophilic electrolytes. There is a constant increase in the demand for low-cost, highenergy-density rechargeable batteries that utilize environmentally friendly elements for applications, such as market-competitive electric vehicles and large-scale power storage systems due to fossil energy shortage and environmental issues. Following the rapid development of electric vehicles with space available to mount battery packs, it is now necessary for batteries to possess good safety characteristics 1 and high volumetric energy density, which is more important than gravimetric energy density.2 Rechargeable magnesium batteries with magnesium as the anode may correspond to superior candidates compatible with post Li-ion batteries that contain a lithium metal anode, which provides a volumetric capacity (2062 mAh cm −3 ) exceeding that of a current graphite anode (777 mAh cm −3 ), 2 due to a relatively lower price ($2700 and $64800/ton for Mg and Li, respectively), 2,3 a higher theoretical volumetric capacity (3832 mAh cm −3 ), 2 and higher expected safety (the dendritic morphologies for magnesium deposits are lower than that for lithium). 4 Muldoon et al. first suggested an electrophilic sulfur cathode candidate with a high theoretical capacity (1671 mAh g −1 or 3459 mAh cm −3 ) corresponding to a conversion class as opposed to an insertion class. It is chemically incompatible with nucleophilic magnesium organohaloaluminate electrolytes and compatible with a non-nucleophilic electrolyte based on a recrystallized Mg complex [Mg 2 (μ-Cl) 3 (THF) 6 ][HMDSAlCl 3 ] formed from a reaction between hexamethyldisilazide magnesium chloride (HMDSMgCl) and AlCl 3 (3:1 molar ratio) in tetrahydrofuran (THF).2,4 The magnesium/sulfur (Mg/S) batteries yield a theoretical volumetric energy density exceeding 4000 Wh L −1 as compared to 2800 Wh L −1 for lithium/sulfur (Li/S) batteries.5 However, on cycling, Mg/S batteries also suffer from capacity fading, which results from low active...

show abstract

“…4. A linear background subtraction is performed on the raw data, and the peaks are fitted using The data is extracted from EDS spectra [32]. These XPS results are also consistent to our previous results [26].…”

Section: Phase Identificationmentioning

confidence: 68%

Morphology and properties evolution of kesterite Cu2ZnSnS4 microfibers synthesized via electrospinning method

Song

2015

J Porous Mater

View full text Add to dashboard Cite

Solar cells and related key materials are still among the most interesting researching field. In this work, kesterite Cu 2 ZnSnS 4 (CZTS) cross-linked fibers and dense films, which are promising candidates for active layers used in the third generation solar cells, are developed via electrospinning following sulfurization at high temperature. Morphology dependence and properties evolution are investigated for the samples obtained by sulfurization in the temperature range of 450-600°C. Samples are characterized by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, Raman and X-ray photoelectronic spectroscopy, and UV-Vis absorbance spectra. It is found that, with the sulfurization temperature increasing, morphologies develop from isolated CZTS fibers to interconnected fibers, and finally forming a submicron flake composed dense films, accompanying a band gap evolution from 1.49 to 1.44 eV, just by simply adjusting the solutes concentration and vulcanization parameters.

show abstract

Band-gap tunable (Cu2Sn)x/3Zn1−xS nanoparticles for solar cells

Cited by 106 publications

References 24 publications

Improved photoelectrochemical performance of Cu2ZnSnS4 (CZTS) thin films prepared using modified successive ionic layer adsorption and reaction (SILAR) sequence

Improved photoelectrochemical performance of Cu2ZnSnS4 (CZTS) thin films prepared using modified successive ionic layer adsorption and reaction (SILAR) sequence

Application of a Sulfur Cathode in Nucleophilic Electrolytes for Magnesium/Sulfur Batteries

Morphology and properties evolution of kesterite Cu2ZnSnS4 microfibers synthesized via electrospinning method

Contact Info

Product

Resources

About