Efficiency enhancement of P3HT:PCBM solar cells containing scattering Zn-Al hydrotalcite nanoparticles in the PEDOT:PSS layer

Bolognesi, Margherita; Tessarolo, Marta; Posati, Tamara; Nocchetti, Morena; Benfenati, Valentina; Seri, Mirko; Ruani, G.; Muccini, Michele

doi:10.2478/oph-2013-0001

Cited by 19 publications

(18 citation statements)

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“…SEM images collected on the 2 mw /PEDOT:PSS loaded at 5.5 % showed a good dispersion of the NP and confirmed the presence of some aggregates of 1–3 μm (Figure ). In agreement with our previous work, the only slight variation of the PEDOT:PSS surface morphology after the introduction of different amounts of NP suggests their homogeneous dispersion, as favored by the NP and PEDOT:PSS high chemical compatibility, and their preferential in‐plane self‐organization. This results in a maximized cross‐section per NP, enabling their optimal scattering and LDS functionalities in the composite films.…”

Section: Resultssupporting

confidence: 92%

“…The hydrophilicity, chemical inertness, semi‐transparency and emission properties of 2 mw render them a good potential candidate for their use as scattering/luminescent downshifting material which can be combined with PEDOT:PSS in electro‐ and optically active multi‐functional composites, for their application as bottom semi‐transparent hole transporting/electron blocking layer in solar cells …”

Section: Resultsmentioning

confidence: 99%

“…For instance, it was recently reported that Zn‐Al hydrotalcite nanosheets dispersed in the poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer of organic bulk heterojunction (BHJ) solar cells effectively scattered a portion of the incident light into larger angles through the active layer of the device, without altering the electrical and transmission properties of the PEDOT:PSS film. This enhanced the photocurrent and efficiency of the resulting solar cell by ≈10 % …”

Section: Introductionmentioning

confidence: 99%

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Layered Tb‐Doped Yttrium Carboxyphosphonate Nanocrystals as Efficient Filler for PEDOT:PSS Composite Films

et al. 2017

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A layered yttrium phosphonate based on N‐(phosphonomethyl)glycine (H3L) and of formula Y(PO3CH2NHCH2COOH)(HPO3CH2NHCH2COOH) was synthesized in mild hydrothermal conditions. Its crystal structure was first determined by single‐crystal X‐ray diffraction. Then, the synthetic parameters were changed in order to reduce the particle size of the compound. The use of microwave (MW) irradiation during the synthesis allowed a) to obtain the compound in form of nanoparticles (NP) in the 50–300 nm range dispersed in water, b) to strongly reduce the reaction time by a factor 150, and c) to successfully introduce into the structure small amounts of a luminescent ion like terbium(III) as an isomorphic substituent of yttrium(III). The obtained NP were used to prepare composite materials by dispersing them in poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). The resulting optical, photophysical, morphological and electrical properties of modified and pristine PEDOT:PSS films were investigated and compared, in order to test the potential use of Y(H2L)(HL) NP as luminescent downshifting materials in optoelectronic devices.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Layered Tb‐Doped Yttrium Carboxyphosphonate Nanocrystals as Efficient Filler for PEDOT:PSS Composite Films

et al. 2017

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“…Devices c and d , with Structure 2 based on poly(3‐hexylthiophene) (P3HT):PC 61 BM as active layer, were studied (Table and Figure ). Again, while device c with untreated m‐PEDOT:PSS gives a low PCE of 2%, device d which contains IPA‐treated m‐PEDOT:PSS shows a PCE improvement by ≈30%, reaching a PCE of 2.5%, which is in line with the performance of P3HT:PC 61 BM‐based solar cells processed in air …”

Section: Resultssupporting

confidence: 75%

Efficient and Versatile Interconnection Layer by Solvent Treatment of PEDOT:PSS Interlayer for Air‐Processed Organic Tandem Solar Cells

Prosa

Tessarolo

Bolognesi³

et al. 2016

Adv Materials Inter

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A robust and efficient interconnection layer (ICL) based on low conductive poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) and ZnO nanoparticles is implemented in a solution‐air‐processed, blade coated inverted polymer tandem solar cell. The commercial PEDOT:PSS (Heraeus Clevios P VP Al 4083) is modified with a fluorosurfactant to allow its deposition onto any hydrophobic active layer surface. However, this method alters the electrical and energetic properties of the PEDOT:PSS thus affecting the interface with the ZnO layer, responsible for an inefficient ICL and poorly performing tandem devices. The ohmic contact at the PEDOT:PSS/ZnO interface is successfully optimized through a simple solvent treatment of the PEDOT:PSS film surface, leading to tandem devices with power conversion efficiencies (PCEs) improved by more than 50% compared to the untreated reference system. The reported method is an easy and versatile approach to optimize the functionality of the PEDOT:PSS/ZnO ICL of inverted multijunction devices, applicable onto any organic active layer and compatible with a roll‐to‐roll production line.

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“…Recently, laboratory-scale bulk heterojunction (BHJ) solar cells have reached the milestone of 11% [4], through a synergic development of increasingly high performing photoactive materials [5][6][7][8][9], understanding of the morphological film nanostructure [10,11] and device structure optimization [12][13][14][15][16][17][18]. However, the achievement of high performance has little technological impact if the resulting device lifetime is unsuitable for the technological requirements.…”

Section: Introductionmentioning

confidence: 99%

Predicting thermal stability of organic solar cells through an easy and fast capacitance measurement

Tessarolo

Guerrero

Gedefaw

et al. 2015

Solar Energy Materials and Solar Cells

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Degradation of Organic Photovoltaic (OPV) devices is currently a topic under intense research as it is one of the main limitations towards the commercialization of this technology. Morphological changes at both active layer and interfaces with the outer contacts are believed to determine main key issues to be overcome. In-line techniques are essential to rule out any effect arising during sample fabrication.Unfortunately, the number of physical techniques able to provide morphological information on complete and operational devices is certainly limited. In this work, we study the thermal degradation of bulk heterojunction (BHJ) solar cells composed by different donor polymers with techniques developed to provide in-situ information on operational devices. Capacitance measurement as a function of temperature monitors the electrical integrity of the active layer and provides the threshold temperature (T MAX ) at which the whole device becomes thermally unstable. We found a direct correlation between the threshold temperature T MAX , obtained by capacitance-temperature measurements on complete OPV devices, and the power conversion efficiency decay measured at 85°C. Devices show to be thermal stable when the temperature of the thermal stress is below the T MAX , while above the T MAX evident changes in the active layer or at the active layer/electrode interface are also detected by confocal fluorescence microscopy. The capacitance method gives precious guidelines to predict the thermal stability of BHJ solar cells using accelerated and easy tests.

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Efficiency enhancement of P3HT:PCBM solar cells containing scattering Zn-Al hydrotalcite nanoparticles in the PEDOT:PSS layer

Cited by 19 publications

References 0 publications

Layered Tb‐Doped Yttrium Carboxyphosphonate Nanocrystals as Efficient Filler for PEDOT:PSS Composite Films

Layered Tb‐Doped Yttrium Carboxyphosphonate Nanocrystals as Efficient Filler for PEDOT:PSS Composite Films

Efficient and Versatile Interconnection Layer by Solvent Treatment of PEDOT:PSS Interlayer for Air‐Processed Organic Tandem Solar Cells

Predicting thermal stability of organic solar cells through an easy and fast capacitance measurement

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