Selective Synthesis of Ternary Copper–Antimony Sulfide Nanocrystals

Xu, Duanyang; Shen, Shuling; Zhang, Yejun; Gu, Hongwei; Wang, Qiangbin

doi:10.1021/ic401291a

Cited by 61 publications

(59 citation statements)

References 37 publications

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“…16,18 However, previous studies have reported that CuSbS 2 NC is an indirect band gap material. 17,24 A possible reason for the discrepancies between the theoretical and experimental band gaps is the presence/absence of impurities or defects in the CuSbS 2 NCs, as suggested by Kumar et al 7 In contrast to the CuSbS 2 and Cu 12 Sb 4 S 13 NCs, the Cu 3 SbS 4 NCs exhibited a behavior consistent with indirect band gap semiconductors (n = 1/2). In addition, the CuSbS 2 and Cu 12 Sb 4 S 13 NCs exhibited a gradual increase in absorbance in the NIR wavelength region.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

et al. 2015

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The p-type nanocrystals (NCs) of copper-based chalcogenides, such as CuInSe2 and Cu2ZnSnS4, have attracted increasing attention in photovoltaic applications due to their potential to produce cheap solution-processed solar cells. Herein, we report the synthesis of copper-antimony-sulfide (CAS) NCs with different crystal phases including CuSbS2, Cu3SbS4, and Cu12Sb4S13. In addition, their morphology, crystal phase, and optical properties were characterized using transmission electron microscopy, X-ray diffractometry, UV-vis-near-IR spectroscopy, and photoemission yield spectroscopy. The morphology, crystal phase, and electronic structure were significantly dependent on the chemical composition in the CAS system. Devices were fabricated using particulate films consisting of CAS NCs prepared by spin coating without a high-temperature treatment. The CAS NC-based devices exhibited a diode-like current-voltage characteristic when coupled with an n-type CdS layer. In particular, the CuSbS2 NC devices exhibited photovoltaic responses under simulated sunlight, demonstrating its applicability for use in solution-processed solar cells.

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Section: ■ Results and Discussionmentioning

confidence: 95%

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

et al. 2015

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“…Normally, the ligand likely plays a key role for the size controllable synthesis of CAS NCs. Most of the reports on CAS NCs synthetic scheme chose fatty amines as the ligand, while the sizes of the products were too large in the range from 20 nm to several micrometers, which limited their special performance in the application. In order to obtain smaller size of CAS NCs, Tachibana and co‐workers chose fatty amines and carboxylic acids as the coligands, CAS NCs with size range from 6 to 18 nm were obtained.…”

Section: Introductionmentioning

confidence: 92%

Size-Dependent Synthesis of Cu₁₂Sb₄S₁₃Nanocrystals with Bandgap Tunability

Chen

Zhou

Chen

et al. 2015

Part. Part. Syst. Charact.

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Copper antimony sulfide (CAS) is an attractive material with a suitable bandgap for sunlight absorption and a high absorption coefficient in solar cells. There are few works focused on the size‐controllable synthesis of CAS nanocrystals, and no work reports on the special character of bandgap tunability until now. Herein, high‐quality monodispersed tetrahedrite (Cu12Sb4S13) nanocrystals are synthesized through a novel solution‐based method by using thiols as ligands. The as‐prepared Cu12Sb4S13 nanocrystals have a narrow size distribution and wide size range from 2 to 16 nm, while their absorption band edges are continuously tunable from 620 to 780 nm. The quantum size effects with bandgap tunability of Cu12Sb4S13 nanocrystals are observed for the first time.

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“…This was also investigated by other researchers [6][7][8]12], but the structure of underpotentially deposited Sb adlayer on Au(111) was not resolved on an atomic level. It is well known that Sb [13][14][15], Bi [16][17][18], etc. can be used to form bimetallic semiconductors.…”

Section: Introductionmentioning

confidence: 99%

Antimony deposition onto Au(111) and insertion of Mg

Zan¹,

Xing²,

Abd-El-Latif³

et al. 2019

Beilstein J. Nanotechnol.

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Magnesium-based secondary batteries have been regarded as a viable alternative to the immensely popular Li-ion systems owing to their high volumetric capacity. One of the largest challenges is the selection of Mg anode material since the insertion/extraction processes are kinetically slow because of the large ionic radius and high charge density of Mg2+ compared with Li+. In this work, we prepared very thin films of Sb by electrodeposition on a Au(111) substrate. Monolayer and multilayer deposition (up to 20 monolayers) were characterized by cyclic voltammetry (CV) and scanning tunneling microscopy (STM). Monolayer deposition results in a characteristic row structure; the monolayer is commensurate in one dimension, but not in the other. The row structure is to some extent maintained after deposition of further layers. After dissolution of the Sb multilayers the substrate is roughened on the atomic scale due to alloy formation, as demonstrated by CV and STM. Further multilayer deposition correspondingly leads to a rough deposit with protrusions of up to 3 nm. The cyclic voltammogram for Mg insertion/de-insertion from MgCl2/AlCl3/tetraglyme (MACC/TG) electrolyte into/from a Sb-modified electrode shows a positive shift (400 mV) of the onset potential of Mg deposition compared to that of a bare Au electrode. From the charge of the Mg deposition, we find that the ratio of Mg to Sb is 1:1, which is somewhat less than expected for the Mg3Sb2 alloy.

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Selective Synthesis of Ternary Copper–Antimony Sulfide Nanocrystals

Cited by 61 publications

References 37 publications

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

Size-Dependent Synthesis of Cu₁₂Sb₄S₁₃Nanocrystals with Bandgap Tunability

Antimony deposition onto Au(111) and insertion of Mg

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Selective Synthesis of Ternary Copper–Antimony Sulfide Nanocrystals

Cited by 61 publications

References 37 publications

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

Synthesis of Copper–Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

Size-Dependent Synthesis of Cu12Sb4S13Nanocrystals with Bandgap Tunability

Antimony deposition onto Au(111) and insertion of Mg

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Product

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Size-Dependent Synthesis of Cu₁₂Sb₄S₁₃Nanocrystals with Bandgap Tunability