Inorganic solid state solar cell with ultra-thin nanocomposite absorber based on nanoporous TiO2 and In2S3

Herzog, Christian; Belaidi, Abdelhak; Ogacho, Alex; Dittrich, Thomas

doi:10.1039/b905897d

Cited by 38 publications

(34 citation statements)

References 11 publications

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“…Because the photovoltage is entirely de-coupled from solid-liquid charge transfer, it allows direct measurement of solid-solid junction potentials. Thomas Dittrich's group has used SPS extensively over the past decade on nanocrystal [198][199][200], molecular [201][202][203], and thin film [204] photovoltaics. However, as shown in the following example, SPS is also well suited for the characterization of nanostructured photocatalysts, where it can provide a quantitative understanding of charge transfer at solid-solid and solid-molecule contacts [189].…”

Section: Measuring Photovoltage In Nanoscale Photocatalystsmentioning

confidence: 99%

Nanoscale Effects in Water Splitting Photocatalysis

Osterloh

2015

Topics in Current Chemistry

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From a conceptual standpoint, the water photoelectrolysis reaction is the simplest way to convert solar energy into fuel. It is widely believed that nanostructured photocatalysts can improve the efficiency of the process and lower the costs. Indeed, nanostructured light absorbers have several advantages over traditional materials. This includes shorter charge transport pathways and larger redox active surface areas. It is also possible to adjust the energetics of small particles via the quantum size effect or with adsorbed ions. At the same time, nanostructured absorbers have significant disadvantages over conventional ones. The larger surface area promotes defect recombination and reduces the photovoltage that can be drawn from the absorber. The smaller size of the particles also makes electron-hole separation more difficult to achieve. This chapter discusses these issues using selected examples from the literature and from the laboratory of the author.

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Section: Measuring Photovoltage In Nanoscale Photocatalystsmentioning

confidence: 99%

Nanoscale Effects in Water Splitting Photocatalysis

Osterloh

2015

Topics in Current Chemistry

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“…Alternative loading methods have included using chemical bath deposition (CBD) [166][167][168], successive ionic layer adsorption and reaction (SILAR) [161,169,170] and ion layer gas adsorption and reaction to form CQDs in situ [171]. A recent study has shown that although the SILAR loading method provides more intimate interfacial contact, resulting in efficient charge injection and higher photocurrents, sensitization using ex situ synthesized CQDs leads to longer electron lifetimes [172].…”

Section: Cqd-sensitized Photovoltaicsmentioning

confidence: 99%

Advancing colloidal quantum dot photovoltaic technology

et al. 2016

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Colloidal quantum dots (CQDs) are attractive materials for solar cells due to their low cost, ease of fabrication and spectral tunability. Progress in CQD photovoltaic technology over the past decade has resulted in power conversion efficiencies approaching 10%. In this review, we give an overview of this progress, and discuss limiting mechanisms and paths for future improvement in CQD solar cell technology. We briefly summarize nanoparticle synthesis and film processing methods and evaluate the optoelectronic properties of CQD films, including the crucial role that surface ligands play in materials performance. We give an overview of device architecture engineering in CQD solar cells. The compromise between carrier extraction and photon absorption in CQD photovoltaics is analyzed along with different strategies for overcoming this trade-off. We then focus on recent advances in absorption enhancement through innovative device design and the use of nanophotonics. Several light-trapping schemes, which have resulted in large increases in cell photocurrent, are described in detail. In particular, integrating plasmonic elements into CQD devices has emerged as a promising approach to enhance photon absorption through both near-field coupling and far-field scattering effects. We also discuss strategies for overcoming the single junction efficiency limits in CQD solar cells, including tandem architectures, multiple exciton generation and hybrid materials schemes. Finally, we offer a perspective on future directions for the field and the most promising paths for achieving higher device efficiencies.

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“…20 Several methods for the In 2 S 3 preparation are the spray ion layer gas reaction (ILGAR), sputtering, atomic layer deposition (ALD) or successive ion layer adsorption and reaction (SILAR). 17,[21][22][23] Among all the latter techniques, SILAR is the most desirable since it avoids the use of toxic H 2 S gas and is also a low-cost technique. Up to now only ZnO NRs -In 2 S 3 core-shell were applied in inorganic solid state solar cells with extremely thin absorber (ETA) and CuSCN to act as hole conductor achieving a 3.2% e±ciency when the In 2 S 3 was deposited by the ILGAR technique.…”

Section: Introductionmentioning

confidence: 99%

“…Up to now only ZnO NRs -In 2 S 3 core-shell were applied in inorganic solid state solar cells with extremely thin absorber (ETA) and CuSCN to act as hole conductor achieving a 3.2% e±ciency when the In 2 S 3 was deposited by the ILGAR technique. 20 The SILAR deposition of In 2 S 3 was only used for TiO 2 -based nanoporous solar cells, with PCE of 2.3% when applied in ETA solar cells 22 and 0.54% e±-ciency when applied in quantum dots solar cells (QDSCs). 17 The SILAR technique for the synthesis of In 2 S 3 consists in the use of two aqueous solutions, one of InCl 3 and the other of Na 2 S. 24 The mechanism for the In 2 S 3 SILAR deposition takes place by the following chemical reactions (Eqs.…”

Section: Introductionmentioning

confidence: 99%

“…The shell was deposited on ZnO NRs electrodes with lengths: $ 1 and 6 m (electrode A) and $ 3; 2 (electrode B) 25,26 following the reported SILAR synthesis method. 22 Di®erent In x S y shell thicknesses were prepared on the ZnO NRs and 2 In x S y shell layer ratios were studied applying di®erent Na 2 S concentrations. The DSC of the ZnO/In x S y electrodes revealed a higher PCE when the In:S ratio of the In x S y shell was 10:1 and not the stoichiometric 2:3 expected for a In 2 S 3 layer.…”

Section: Introductionmentioning

confidence: 99%

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Vertically Aligned ZnO/In_xS_y Core–Shell Nanorods for High Efficient Dye-Sensitized Solar Cells

González-Valls

Ballesteros

Lira‐Cantú

2015

NANO

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Innovative vertically aligned ZnO/In x S y nanorod (NR) electrodes were prepared by successive ion layer adsorption and reaction (SILAR) technique. The In x S y shell layer was deposited on top of ZnO NR electrodes of two di®erent lengths, $ 1:6 m and $ 3:2 m. Two sulfur contents on the In x S y shell layer with di®erent layer thicknesses were analyzed. These electrodes were fully characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray di®raction spectroscopy (XRD), Energy-dispersive x-ray spectroscopy (EDS), Infrared spectroscopy (FT-IR), x-ray photoelectron spectroscopy (XPS) and ultraviolet photoemission spectroscopy (UPS) and then applied in dye-sensitized solar cells (DSC). Power conversion efciency of 2.32% was observed when a low-sulfur content In x S y shell layer was applied in comparison to the stoichiometric In 2 S 3 shell layer (0.21%) or the bare ZnO NRs (0.87%). In the case of low sulfur content, a shell layer of In(OH) x S y or/and In(OH) 3 is formed as observed by the presence of -OH observed by FTIR analyses. The presence of higher amounts of hydroxide groups modi¯es the bandgap and work function of the In x S y shell and facilitates dye adsorption, increasing the¯nal solar cell performance.

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Inorganic solid state solar cell with ultra-thin nanocomposite absorber based on nanoporous TiO2 and In2S3

Cited by 38 publications

References 11 publications

Nanoscale Effects in Water Splitting Photocatalysis

Nanoscale Effects in Water Splitting Photocatalysis

Advancing colloidal quantum dot photovoltaic technology

Vertically Aligned ZnO/In_xS_y Core–Shell Nanorods for High Efficient Dye-Sensitized Solar Cells

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Inorganic solid state solar cell with ultra-thin nanocomposite absorber based on nanoporous TiO2 and In2S3

Cited by 38 publications

References 11 publications

Nanoscale Effects in Water Splitting Photocatalysis

Nanoscale Effects in Water Splitting Photocatalysis

Advancing colloidal quantum dot photovoltaic technology

Vertically Aligned ZnO/InxSy Core–Shell Nanorods for High Efficient Dye-Sensitized Solar Cells

Contact Info

Product

Resources

About

Vertically Aligned ZnO/In_xS_y Core–Shell Nanorods for High Efficient Dye-Sensitized Solar Cells