CuInS2 quantum dots synthesized by a solvothermal route and their application as effective electron acceptors for hybrid solar cells

Yue, Wenjin; Han, Shi‐Kui; Peng, Ruixiang; Shen, Wei; Geng, Hong; Wu, Fan; Tao, Shanwen; Wang, Mingtai

doi:10.1039/c0jm00611d

Cited by 183 publications

(114 citation statements)

References 81 publications

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“…These peaks are in good agreement with the structure for the AgGa2In3S8 reference pattern (PDF 01-070-8366), indicating that they have a layered structure with hexagonal crystal packing [17]. For CuGaxIn5-xS8 nanocrystals, where x = 3, major diffraction peaks for CGIS nanocrystals are observed at 2θ values of 28.9, 56.5, and 47.8, indicating the formation of CGIS nanocrystals with zincblende structure [18], whereas at higher gallium content, i.e., where x = 4 and 5, the XRD patterns of the CGIS nanocrystals showed major diffraction peaks at 2θ values of 27.6, 29.2, 31.2, 40.4, 48.8, 52.6, and 57.8, with peak positions well-matched with the powder diffraction data reported for the wurtzite structure [19,20].…”

Section: Resultssupporting

confidence: 68%

Solvent-induced deposition of Cu–Ga–In–S nanocrystals onto a titanium dioxide surface for visible-light-driven photocatalytic hydrogen production

Kandiel

Takanabe

2016

Applied Catalysis B: Environmental

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Highlights Cu-Ga-In-S (CGIS) nanocrystals with different Ga/In ratios were readily synthesized. A unique solvent-induced deposition method was developed for loading CGIS nanocrystals onto a TiO2 surface. The CGIS/TiO2 photocatalyst showed improved visible light activity for hydrogen production. The enhanced activities are explained either by the synergistic effect between CGIS and TiO2 or by the improved dispersion and optical properties.4 Abstract:In this paper, copper-gallium-indium-sulfide (CGIS) nanocrystals with different Ga/In ratios, i.e., CuGaxIn5-xS8, where x = 0, 1, 2, 3, 4 and 5, were synthesized and investigated for visible-lightdriven hydrogen (H2) evolution from aqueous solutions that contain sulfide/sulfite ions. The synthesized CGIS nanocrystals were characterized by diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence spectroscopy (PL). With 1.0 wt.% Ru as a co-catalyst, the H2 evolution rate on CuGa2In3S8(CGIS hereafter) showed the highest activity. The CGIS nanocrystals were deposited onto a TiO2 surface via a unique solvent-induced deposition method. The CGIS/TiO2 photocatalyst showed comparable activity to that obtained using bare CGIS nanocrystals when the photocatalyst amount was sufficient in the photoreactor system, suggesting that TiO2 remains intact in terms of photocatalytic activity. The quantity of CGIS nanocrystals, however, required to achieve the rate-plateau condition at saturation was much lower in the presence of TiO2. The enhanced activities at low CGIS loadings observed in the presence of TiO2 were explained by the improved dispersion of the powder suspension and optical path in the photoreactor. This TiO2 supported photocatalyst lowers the required amount of photocatalyst, which is beneficial from an economic point of view.

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Section: Resultssupporting

confidence: 68%

Solvent-induced deposition of Cu–Ga–In–S nanocrystals onto a titanium dioxide surface for visible-light-driven photocatalytic hydrogen production

Kandiel

Takanabe

2016

Applied Catalysis B: Environmental

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“…Moreover, these solar cells offer the following advantages: (i) a direct, in situ, single step active layer preparation without usage of capping ligands for nanoparticle stabilization, (ii) extended absorption characteristics and (iii) effi ciencies of 2.8% which is by far the highest reported for polymer/CIS nanocomposite solar cells [4][5][6] and close to those reported for polymer/CdSe solar cells, which are currently the most effi cient polymer/nanoparticle solar cells. [ 7 ] Inorganic nanoparticles supply a tool for designing active layers with improved charge transport properties, [ 7 , 8 ] because they can be tuned in size and shape (dots, rods, branched structures).…”

mentioning

confidence: 55%

“…In the few reports on polymer/CIS nanocomposite solar cells (with rather low PCEs) the advantage of extended absorption is pointed out. [4][5][6] poly[(2,7-silafl uorene)-alt-(4,7-di-2-thienyl-2,1,3-benzothiadiazole)] (PSiF-DBT). Using spin coating or doctor blading, homogeneous precursor layers were prepared and subsequently converted into the nanocomposite layer via a mild annealing step (see Figure 1 ).…”

mentioning

confidence: 99%

A Direct Route Towards Polymer/Copper Indium Sulfide Nanocomposite Solar Cells

Rath

Edler

Haas

et al. 2011

Advanced Energy Materials

105

180

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“…as soft Lewis acid and simultaneously as a source of sulfide ion [23][24][25][26][27][28][29][30][31]. The precursors was solved up to 60°C then Cu-TU (dark green color) [32] and In-OLA (light green color) [33] complex was formed. The complexes were decomposed to form nanoparticles by heating up to 210°C (dark brown color).…”

Section: Resultsmentioning

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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CuInS2 quantum dots synthesized by a solvothermal route and their application as effective electron acceptors for hybrid solar cells

Cited by 183 publications

References 81 publications

Solvent-induced deposition of Cu–Ga–In–S nanocrystals onto a titanium dioxide surface for visible-light-driven photocatalytic hydrogen production

Solvent-induced deposition of Cu–Ga–In–S nanocrystals onto a titanium dioxide surface for visible-light-driven photocatalytic hydrogen production

A Direct Route Towards Polymer/Copper Indium Sulfide Nanocomposite Solar Cells

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

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