Synthesis of bullet-like wurtzite CuInS2 nanocrystals under atmospheric conditions

Guo, Jie; Zhou, Wenhui; Li, Mei; Hou, Ze‐Liang; Jiao, Jie; Zhou, Zhengji

doi:10.1016/j.jcrysgro.2012.08.029

Cited by 23 publications

(14 citation statements)

References 20 publications

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“…As shown in Figure a, the product powder obtained using a mixed solvent of distilled water and hydrazine hydrate, consists of CuInS 2 and In(OH) 3 , In (OH) 3 grows along (200), (220), (222), (420) and (422) crystal planes at 2θ angles of 22.278°, 31.711°, 39.098°, 51.187° and 56.487° respectively according to the standard PDF card No.76‐1464. It can be seen from Figure b) and c), the XRD patterns of CuInS 2 powders obtained using the mixed solvents of ethylene glycol and hydrazine hydrate or ethanol and hydrazine hydrate, are consistent with those of the wurtzite structure CuInS 2 described by Pan DC, Jie Guo and Jianyong Guo . The wurtzite structure CuInS 2 has the same crystal structure as wurtzite ZnS except for different cell constants.…”

Section: Resultssupporting

confidence: 78%

Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Liu

et al. 2017

Crystal Research and Technology

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CuInS2 powders were prepared by solvothermal method. The effects of experimental conditions on crystal structure, composition phase and morphology were investigated systematically. The phases of product samples were analyzed by X‐ray diffraction (XRD) on the Bruker D8 Advance XRD system with Nifiltered Cu‐Kα (λ = 1.5059 Å). The morphology of the product powders were observed using scanning electron microscope (SEM) with a model of JSM‐6380LA made by Japan Electronics Co., Ltd. The elemental compositions of the product powders were analyzed by energy dispersive spectroscopy (EDS). The results show that, different solvents have important effects on the crystal structures of CuInS2 powders. With CuC12·2H2O, InCl3 and SC(NH2)2 as raw materials, the wurtzite CuInS2 obtained with the mixed solvent of ethanol and hydrazine hydrate has better crystallinity than that obtained by the mixed solvent of ethylene glycol and hydrazine hydrate. The product powder obtained with ethanol without hydrazine hydrate has major phase chalcopyrite CuInS2. The wurtzite CuInS2 powder consists of aggregated particles with diameters of 0.1 ∼ 0.5 μm. The sample with chalcopyrite has relatively more large particles with diameters of 3 ∼ 5 μm which consist of smaller flakes. The optimum conditions for preparing wurtzite CuInS2 powder are at 160 °C for 20 h using CuC12·2H2O, InCl3 and SC(NH2)2 as raw materials and the mixed solution of ethanol and hydrazine hydrate as solvent. With the increase of reaction temperature, the XRD peaks of chalcopyrite CuInS2 are more obvious, but the new impurity phase Cu2S appears at 220 °C. With holding time prolonging, it is helpful to eliminate the XRD peaks of impurity and promote chalcopyrite CuInS2 formation. The optimum conditions for chalcopyrite CuInS2 are reacting at 220 °C for 30 h with ethanol without hydrazine hydrate as solvent and CuC12·2H2O, InCl3 and SC(NH2)2 as raw materials.

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Section: Resultssupporting

confidence: 78%

Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Liu

et al. 2017

Crystal Research and Technology

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“…After the formation of CuIn x Fe 1-x S 2 and CuIn x Zn 1x S 2 CuIn x Ga 1-x S 2 compounds, the extra OLA, OA and TU bind to surface of nanocrystals as a capping agent because the surface atoms have a lower coordination number in comparison with the interior atoms of nanocrystals. 15,[54][55][56] Additionally, electron binding energy values of Ga 2p3, Ga 2p1 at 1117.8, 1144.2 eV and Zn 2p3, Zn 2p1 at 1045, 1065 eV confirm that the valence states of Ga and Zn in the structure are 3+ and 2+, respectively. We monitored the details of complex formation of reaction by taking aliquots at the end of complex formation stages and the end of the process using FT-IR.…”

Section: Resultsmentioning

confidence: 68%

Structural and optical properties of Fe and Zn substituted CuInS₂ nanoparticles synthesized by a one-pot facile method

et al. 2015

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We substitute indium by iron and zinc in CuInS 2 ternary compound using a facile one-pot synthesis method. The quaternary compound of CuIn x M 1-x S 2 (M=Fe and Zn) was synthesized by solving of CuCl, InCl 3 , FeCl 3 , Zn(ac) 2 and SC(NH 2 ) 2 as precursors in 1-octadecene, oleylamine and oleic acid as non-coordinating, coordinating and capping agent solvents, respectively. The oleic acid, oleylamine and thiourea were used respectively as a hard Lewis base, borderline Lewis base (in compare with oleic acid) and soft Lewis base to form of appropriate complex. The complex formation, structure, and optical of CuIn 1-x M x S 2 (M=Fe and Zn) nanoparticles were studied by Fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), X-Ray photoemission spectroscopy (XPS), transmission electronic microscopy (TEM), ultraviolet-visible-near infrared (UV-Vis-NIR) and photoluminescence (PL) spectroscopy. Absorption edge of solid solution samples can be tuned from 745 nm (visible) to 1200 nm (near infrared) by substitution In 3+ by Zn 2+ and Fe 3+ , respectively.

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“…High efficiency thin film solar cells fabricated based on vacuum based techniques, such as molecular beam epitaxy, co-evaporation, sputtering, ion layer gas reaction are costly [11][12][13]. One of trends in this field is reducing the production cost by introducing vacuum free preparation such as electrodeposition, chemical bath deposition, microwave-assisted synthesis, spray pyrolysis [14][15][16][17] and different wet chemical methods [18][19][20][21][22][23][24][25]. The one pot solution synthesis is one of the best wet chemical methods that have non-vacuum, fast, uncomplicated, highly reproducible, inexpensive equipment, low materials waste, proper stoichiometry and stable colloidal solutions.…”

Section: Introductionmentioning

confidence: 99%

One-pot thermolysis synthesis of CuInS2 nanoparticles with chalcopyrite-wurtzite polytypism structure

Vahidshad

Tahir

Mirkazemi

et al. 2015

J Mater Sci: Mater Electron

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CuInS 2 nanoparticles as the visible (wurtzite, 1.67 eV) or near infrared (chalcopyrite, 1.50 eV) light absorbing material in thin film solar cells, were synthesized using facile, one step heating up method by dissolving of CuCl, InCl 3 and SC(NH 2 ) 2 as precursors in oleylamine (OLA) alone or in combination with oleic acid (OA) and 1-octadecene (ODE) as solvent. The phase, size, morphology, and size distribution were controlled by the coordination ability between solvent molecules and metal precursors, reaction temperature and time. The presence of higher amounts of thiourea or OA to OLA led to the formation of chalcopyrite phase in comparison to wurtzite structure. Also, higher reaction temperatures ([240°C) resulted in favour of more chalcopyrite phase and higher crystallinity but the nanoparticles got agglomerated. As synthesized nanoparticles was characterized by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, high resolution-transmission electronic microscopy, ultravioletvisible-near infrared, photoluminescence. The high resolution TEM confirmed the existence of chalcopyrite structure along with wurtzite structure in the nanocrystal (polytypism). Well controlled chalcopyrite CuInS 2 triangular pyramidal shape with an average size ranging from *10-20 nm size was obtained by using 20 ml OLA or 20 ml OLA along with 4 ml OA and ODE, respectively, with 210°C heating up and 4 h annealing time.

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Synthesis of bullet-like wurtzite CuInS2 nanocrystals under atmospheric conditions

Cited by 23 publications

References 20 publications

Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Structural and optical properties of Fe and Zn substituted CuInS₂ nanoparticles synthesized by a one-pot facile method

One-pot thermolysis synthesis of CuInS2 nanoparticles with chalcopyrite-wurtzite polytypism structure

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Synthesis of bullet-like wurtzite CuInS2 nanocrystals under atmospheric conditions

Cited by 23 publications

References 20 publications

Systematic Investigation on Synthesis of CuInS2 Powder and its Influencing Factors

Systematic Investigation on Synthesis of CuInS2 Powder and its Influencing Factors

Structural and optical properties of Fe and Zn substituted CuInS2 nanoparticles synthesized by a one-pot facile method

One-pot thermolysis synthesis of CuInS2 nanoparticles with chalcopyrite-wurtzite polytypism structure

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Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Systematic Investigation on Synthesis of CuInS₂ Powder and its Influencing Factors

Structural and optical properties of Fe and Zn substituted CuInS₂ nanoparticles synthesized by a one-pot facile method