Performance improvement of Sb2S3-sensitized solar cell by introducing hole buffer layer in cobalt complex electrolyte

Im, Sang Hyuk; Kim, Hi Jung; Rhee, Jae Hui; Lim, Choong Sun; Seok, Sang Il

doi:10.1039/c0ee00741b

Cited by 55 publications

(30 citation statements)

References 17 publications

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“…All of these effects are known to increase the exciton concentration, lifetime of hot electrons, and therefore, the performance of sensitized solar cells. Limited research has previously been carried out with Sb 2 S 3 -TiO 2 nanostructure for solar cell applications [20-22]. A remarkable performance was obtained in both liquid cell configuration and solid configuration.…”

Section: Introductionmentioning

confidence: 99%

Annealing effect on Sb2S3-TiO2 nanostructures for solar cell applications

Wang

Zhang

et al. 2013

Nanoscale Res Lett

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Nanostructures composited of vertical rutile TiO2 nanorod arrays and Sb2S3 nanoparticles were prepared on an F:SnO2 conductive glass by hydrothermal method and successive ionic layer adsorption and reaction method at low temperature. Sb2S3-sensitized TiO2 nanorod solar cells were assembled using the Sb2S3-TiO2 nanostructure as the photoanode and a polysulfide solution as an electrolyte. Annealing effects on the optical and photovoltaic properties of Sb2S3-TiO2 nanostructure were studied systematically. As the annealing temperatures increased, a regular red shift of the bandgap of Sb2S3 nanoparticles was observed, where the bandgap decreased from 2.25 to 1.73 eV. At the same time, the photovoltaic conversion efficiency for the nanostructured solar cells increased from 0.46% up to 1.47% as a consequence of the annealing effect. This improvement can be explained by considering the changes in the morphology, the crystalline quality, and the optical properties caused by the annealing treatment.

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Section: Introductionmentioning

confidence: 99%

Annealing effect on Sb2S3-TiO2 nanostructures for solar cell applications

Wang

Zhang

et al. 2013

Nanoscale Res Lett

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“…The last reason results from the good interfacial contact among P3HT, CIS, and TiO 2 due to hierarchical pores in CIS and TiO 2 layer, as demonstrated in Figures 4 and 5. In addition, it should be noted that our cell efficiency (1.4%) is relatively low compared with that (3% to 5%) of HSC with the structure of TiO 2 /Sb 2 S 3 /P3HT [32,36,48,49], which probably results from the large size of CIS, unoptimized cell structure, etc. Therefore, further improvement of the efficiency could be expected by the optimization of the morphology and thickness of CIS layer and the device structure.…”

Section: Resultsmentioning

confidence: 70%

In situ growth of CuInS2 nanocrystals on nanoporous TiO2 film for constructing inorganic/organic heterojunction solar cells

et al. 2013

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Inorganic/organic heterojunction solar cells (HSCs) have attracted increasing attention as a cost-effective alternative to conventional solar cells. This work presents an HSC by in situ growth of CuInS2(CIS) layer as the photoabsorption material on nanoporous TiO2 film with the use of poly(3-hexylthiophene) (P3HT) as hole-transport material. The in situ growth of CIS nanocrystals has been realized by solvothermally treating nanoporous TiO2 film in ethanol solution containing InCl3 · 4H2O, CuSO4 · 5H2O, and thioacetamide with a constant concentration ratio of 1:1:2. InCl3 concentration plays a significant role in controlling the surface morphology of CIS layer. When InCl3 concentration is 0.1 M, there is a layer of CIS flower-shaped superstructures on TiO2 film, and CIS superstructures are in fact composed of ultrathin nanoplates as ‘petals’ with plenty of nanopores. In addition, the nanopores of TiO2 film are filled by CIS nanocrystals, as confirmed using scanning electron microscopy image and by energy dispersive spectroscopy line scan analysis. Subsequently, HSC with a structure of FTO/TiO2/CIS/P3HT/PEDOT:PSS/Au has been fabricated, and it yields a power conversion efficiency of 1.4%. Further improvement of the efficiency can be expected by the optimization of the morphology and thickness of CIS layer and the device structure.

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“…Semiconductors, such as CdS, CdSe, PbS, and Sb 2 S 3 , have been used as SSC sensitizers [7][8][9][10]. However, the power conversion efficiencies of such SSCs do not compare to those in other traditional dye-sensitized mesoscopic solar cells.…”

Section: Introductionmentioning

confidence: 98%

Nanocrystalline Sb2S3 sensitized TiO2 photoanode preparation and its application in solar cells

Dou

Yan

Wang

et al. 2015

J Mater Sci: Mater Electron

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Nanocrystalline Sb 2 S 3 was synthesized using chemical bath deposition, and TiO 2 -Sb 2 S 3 composite electrodes were fabricated by combining the nanocrystalline Sb 2 S 3 with mesoporous TiO 2 thin films. The composite electrodes were characterized by XRD, SEM, TEM, EDX, and UV-Visible absorption. P3HT and CuSCN were used as hole-transporting materials, and thermally evaporated silver films were used as counter electrodes in the fabricated solar cells. The solar cells with P3HT or CuSCN as hole-transporting material exhibit the highest efficiencies of 0.34 and 0.47 %, respectively.

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Performance improvement of Sb2S3-sensitized solar cell by introducing hole buffer layer in cobalt complex electrolyte

Cited by 55 publications

References 17 publications

Annealing effect on Sb2S3-TiO2 nanostructures for solar cell applications

Annealing effect on Sb2S3-TiO2 nanostructures for solar cell applications

In situ growth of CuInS2 nanocrystals on nanoporous TiO2 film for constructing inorganic/organic heterojunction solar cells

Nanocrystalline Sb2S3 sensitized TiO2 photoanode preparation and its application in solar cells

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