Efficient Organic/Inorganic Hybrid Solar Cell Integrating Polymer Nanowires and Inorganic Nanotetrapods

Xu, Weizhe; Tan, Furui; Liu, Xiansheng; Zhang, Weifeng; Qu, Shengchun; Wang, Zhijie; Wang, Zhanguo

doi:10.1186/s11671-016-1795-9

Cited by 19 publications

(12 citation statements)

References 36 publications

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“…Recently, a method for enhancing the performances of OSCs by incorporating the advantages of inorganic semiconductors – such as their unique optical properties and high mobility properties – into OSCs has been attracting attention . In particular, inorganic semiconductor quantum dots (QDs) have outstanding optical properties and possess suitable properties for the fabrication of photovoltaic devices via facile solution processing including large extinction coefficients, high emission properties, and quantum‐size‐effect band gap tenability .…”

Section: Introductionmentioning

confidence: 99%

Highly efficient Ternary Solar Cells of 10.2% with Core/Shell Quantum Dots via FRET Effect

et al. 2018

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Ternary organic solar cells (OSCs) with the efficiency over 10% are fabricated as an inverted structure with core/shell type quantum dots (QDs) as third component. Förster resonance energy transfer occurs due to overlap between the emission range (λ em ¼ 500-800 nm) of InP/ZnS QDs and the absorption range (λ abs ¼ 550-800 nm) of PTB7-Th donor polymer. InP/ZnS QDs increase the photocurrent of the hybrid active layer via the strong emission properties of ZnS shells surrounding the InP core QDs, which transfer photon energy to PTB7-Th (UV-vis spectroscopy and photoluminescence). X-ray photoelectron spectroscopy (XPS) depth profiling reveals that InP/ZnS QDs are distributed on the surface of the hybrid active layer, while grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis reveals that these QDs enhance the crystalline structure of the hybrid active layer. The incorporation of an ethanedithiol (EDT)-modified ZnO layer as an electron transport layer enhances the carrier transport and decreases carrier recombination, providing a uniform morphology and surface potential favorable for electron extraction and transport, as indicated by atomic force microscopy and electrostatic force microscopy analyses. Due to the synergistic effects of InP/ZnS QDs and the EDT-modified ZnO layer, the power conversion efficiency (PCE) is 10.2% via the enhancement in short-circuit current density (J SC ) from 17.4 to 18.4 mA cm À2 and fill factor (FF) from 67.2 to 69.3%.

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Section: Introductionmentioning

confidence: 99%

Highly efficient Ternary Solar Cells of 10.2% with Core/Shell Quantum Dots via FRET Effect

et al. 2018

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“…[94] Xu et al studied a hybrid architecture containing P3HT nanowires and CdSe nanotetrapods forming bicontinuous charge channels for holes and electrons, respectively. [105] In comparison with many other studies using P3HT as hole conductor, the achieved well crystallized P3HT nanowires enabled an enhanced light absorption in the long wavelength range as well as improved the charge carrier transport in the hybrid active layer. An efficient dissociation of photogenerated excitons was realized by the interpercolation of these two nano-building blocks.…”

Section: Semiconductor Hybrid Blends Using Functionalized Semiconductmentioning

confidence: 81%

“…As compared with reference solar cells using P3HT molecules without having preformed nanowires the novel approach caused an enhancement up to 42%. [105] Among the many other studies using such combination of conjugated polymers and inorganic nanoparticles, rather high efficiencies were reached if the inorganic component was varied and if low band gap polymers were used. For example Liu et al combined PbS x Se 1-x nanocrystals and a low-bandgap polymer PDTPBT, consisting of alternating N-alkyl dithieno[3,2-b:2′,3′-d]pyrrole and 2,1,3-benzothiadiazole units.…”

Section: Semiconductor Hybrid Blends Using Functionalized Semiconductmentioning

confidence: 99%

“…As a consequence, the electron‐transport pathways were not well percolating and limited the power conversion efficiencies to 1.3% for the best devices . Xu et al studied a hybrid architecture containing P3HT nanowires and CdSe nanotetrapods forming bicontinuous charge channels for holes and electrons, respectively . In comparison with many other studies using P3HT as hole conductor, the achieved well crystallized P3HT nanowires enabled an enhanced light absorption in the long wavelength range as well as improved the charge carrier transport in the hybrid active layer.…”

Section: Semiconductor Hybrid Blends Using Functionalized Semiconductmentioning

confidence: 99%

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Hybrid Photovoltaics – from Fundamentals towards Application

Müller‐Buschbaum

Thelakkat

Fässler

et al. 2017

Advanced Energy Materials

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In hybrid photovoltaics, an organic and an inorganic semiconductor are combined in the active layer, with the advantages of both material classes in a single device. The organic component contributes towards the possibility for wet chemical device preparation with potentially low costs in combination with achieving flexible devices. From the inorganic component an increase in stability, as well as superior opto‐electronic properties, is added. Given the large diversity of organic and inorganic semiconductors, a large number of possible realizations of hybrid solar cells emerge. In the present review, we limit to hybrid solar cells which combine conjugated polymers with inorganic materials such as titanium dioxide, zinc oxide, silicon, germanium and quantum dots to keep focused. Particular emphasis is put on different routes to tailor nanostructures, such as the use of semiconductor block copolymers. The inorganic component is either synthesized directly in one of the blocks or added as a pre‐synthesized nanomaterial to form the hybrid material. Alternatively, the block copolymer is used as a structure‐directing template in a sol–gel synthesis approach to have tailored inorganic nanostructures, which are back‐filled with the organic component to fabricate the hybrid material. Hybrid solar cells based on crystalline Si are discussed for comparison.

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“…In our laboratory, various concentrations of caffeic acid were used for the synthesis of AuNPs, and their catalytic activity was evaluated using 4-nitrophenol reduction reaction [ 26 ]. Caffeic acid is one of the secondary metabolites and phenolic compounds found in plants.…”

Section: Resultsmentioning

confidence: 99%

Platycodon saponins from Platycodi Radix (Platycodon grandiflorum) for the Green Synthesis of Gold and Silver Nanoparticles

et al. 2018

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A green synthesis of gold and silver nanoparticles is described in the present report using platycodon saponins from Platycodi Radix (Platycodon grandiflorum) as reducing agents. Platycodin D (PD), a major triterpenoidal platycodon saponin, was enriched by an enzymatic transformation of an aqueous extract of Platycodi Radix. This PD-enriched fraction was utilized for processing reduction reactions of gold and silver salts to synthesize gold nanoparticles (PD-AuNPs) and silver nanoparticles (PD-AgNPs), respectively. No other chemicals were introduced during the reduction reactions, providing an entirely green, eco-friendly, and sustainable method. UV-visible spectra showed the surface plasmon resonance bands of PD-AuNPs at 536 nm and PD-AgNPs at 427 nm. Spherically shaped nanoparticles were observed from high-resolution transmission electron microscopy with average diameters of 14.94 ± 2.14 nm for PD-AuNPs and 18.40 ± 3.20 nm for PD-AgNPs. Minor triangular and other polygonal shapes were also observed for PD-AuNPs along with spherical ones. Atomic force microscopy (AFM) images also demonstrated that both nanoparticles were mostly spherical in shape. Curvature-dependent evolution was employed to enhance the AFM images and precisely measure the sizes of the nanoparticles. The sizes were measured as 19.14 nm for PD-AuNPs and 29.93 nm for PD-AgNPs from the enhanced AFM images. Face-centered cubic structures for both nanoparticles were confirmed by strong diffraction patterns from high-resolution X-ray diffraction analyses. Fourier transform infrared spectra revealed the contribution of –OH, aromatic C=C, C–O, and C–H functional groups to the synthesis. Furthermore, the catalytic activity of PD-AuNPs was assessed with a reduction reaction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. The catalytic activity results suggest the potential application of these gold nanoparticles as catalysts in the future. The green strategy reported in this study using saponins as reducing agents will pave new roads to develop novel nanomaterials with versatile applications.

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Efficient Organic/Inorganic Hybrid Solar Cell Integrating Polymer Nanowires and Inorganic Nanotetrapods

Cited by 19 publications

References 36 publications

Highly efficient Ternary Solar Cells of 10.2% with Core/Shell Quantum Dots via FRET Effect

Highly efficient Ternary Solar Cells of 10.2% with Core/Shell Quantum Dots via FRET Effect

Hybrid Photovoltaics – from Fundamentals towards Application

Platycodon saponins from Platycodi Radix (Platycodon grandiflorum) for the Green Synthesis of Gold and Silver Nanoparticles

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