Hybrid Photovoltaic Device Based on Nanoporous GaAs by Using Ag Metal-Assisted Nanoscale Lithography

Chen, Cheng-Chiang; Chen, Lung-Chien

doi:10.1149/2.087112jes

Cited by 2 publications

(2 citation statements)

References 31 publications

(31 reference statements)

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“…Most current approaches to the fabrication of functional semiconducting inorganic–organic hybrid materials with nanoscale order, such as those based on organic-coated aligned inorganic nanowires, mesoporous materials, and lithographic patterning, often require multistep procedures or include top-down fabrication steps, which may suffer from scalability issues. We recently reported a facile method to control macroscopic orientation of organic–inorganic lamellae in a one-step electrodeposition by modifying the surface chemistry of the working electrode and using 1-pyrenebutyric acid ( PyBA ) as a model surfactant.…”

Section: Introductionmentioning

confidence: 99%

Rationalizing Molecular Design in the Electrodeposition of Anisotropic Lamellar Nanostructures

et al. 2013

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Previous work has shown that nanoscale lamellar inorganic−organic hybrid materials can be synthesized on transparent conductive substrates via the electrodeposition of Zn(OH) 2 in the presence of conjugated surfactants. These surfactants introduce p-type semiconducting supramolecular phases; thus, following conversion of the Zn(OH) 2 phase to the n-type semiconductor ZnO, the lamellar hybrids exhibit high photoconductive gains and can exhibit photovoltaic activity. We report here on a family of carboxylated terthiophene-based surfactants designed with systematic modifications to molecular geometry, valency, and flexibility to investigate how these features affect the synthesis of the p-type/n-type semiconducting hybrid materials. We use scanning electron microscopy (SEM) and two-dimensional (2D) grazing-incidence X-ray diffraction (2D-GIXD) to correlate molecular features of the surfactants with growth and orientation of the nanoscale lamellae that form during electrodeposition on either hydrophilic or hydrophobic substrates. We find that molecularly flexible, monovalent terthiophene amphiphiles with linear geometries generate highly oriented and homogeneous films of the nanoscale hybrids, whereas T-shaped geometries, rigid molecules, or divalent surfactants tend to produce more heterogeneous and isotropically oriented lamellae under the same conditions. The critical aggregation concentrations (CAC) of the amphiphiles are higher than the concentrations used during electrodeposition, indicating that the growth and orientation of lamellar structures are mediated by surfactant−substrate interactions, rather than the assemblies they form in bulk solutions. Molecular design in these hybrid systems is a key factor in optimizing function, since dense and macroscopically oriented growth is necessary in both photoconductivity and photovoltaic efficiency of solar cells.

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Section: Introductionmentioning

confidence: 99%

Rationalizing Molecular Design in the Electrodeposition of Anisotropic Lamellar Nanostructures

et al. 2013

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“…Therefore GNPs promotes the generation of charge carriers and increase the photocurrent of solar cells. [24][25][26] Subsequently, the mixture was spin-coated on ITO glass and InN-CPL/ITO substrates to a thickness of around 15 m, and a 0:5 Â 0:5 active area was defined, respectively. Thereafter, the TiO 2 photoelectrode with and without InN-CPL were immersed in a 3 Â 10 À4 M Ru-metal complex dye named D719 ([RuL 2 (NCS) 2 ]: 2 TBA) at room temperature for 24 h, and sintered at 450 and 500 C for 30 min, to increase its anatase content (anatase : rutile ¼ 85 : 15).…”

Section: Methodsmentioning

confidence: 99%

Enhanced Performance of Dye-Sensitized Solar Cells with Nanostructure InN Compact Layer

Chen¹,

Chen²,

Kuo³

2013

Jpn. J. Appl. Phys.

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This study presents a dye-sensitized solar cells (DSSCs) with a nanostructured InN compact layer (InN-CPL). The effect of a nanostructured InN-CPL in a DSSC structure prepared by radio frequency magnetron sputtering was examined. The InN-CPL effectively reduces the back reaction at the interface between the indium tin oxide (ITO) transparent conductive film and the electrolyte in the DSSC. DSSCs fabricated on ITO/InN-CPL/TiO2/D719 exhibited a short-circuit current density (J SC), open-circuit voltage (V OC), and power conversion efficiency (η) of 23.2 mA/cm2, 0.7 V, and 8.9%, respectively.

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Hybrid Photovoltaic Device Based on Nanoporous GaAs by Using Ag Metal-Assisted Nanoscale Lithography

Cited by 2 publications

References 31 publications

Rationalizing Molecular Design in the Electrodeposition of Anisotropic Lamellar Nanostructures

Rationalizing Molecular Design in the Electrodeposition of Anisotropic Lamellar Nanostructures

Enhanced Performance of Dye-Sensitized Solar Cells with Nanostructure InN Compact Layer

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