A silanol-functionalized polyoxometalate with excellent electron transfer mediating behavior to ZnO and TiO<sub>2</sub> cathode interlayers for highly efficient and extremely stable polymer solar cells

Tountas, Marinos; Topal, Yasemin; Verykios, Apostolis; Soultati, Anastasia; Kaltzoglou, Andreas; Papadopoulos, Theodoros A.; Auras, Florian; Seintis, Kostas; Fakis, Mihalis; Palilis, Leonidas C.; Tsikritzis, Dimitris; Κέννου, Στέλλα; Fakharuddin, Azhar; Schmidt‐Mende, Lukas; Gardelis, S.; Kuş, Mahmut; Davazoglou, Dimitris; Argitis, Panagiotis; Vasilopoulou, Maria

doi:10.1039/c7tc04960a

Cited by 25 publications

(21 citation statements)

References 69 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hybrid nanoporous metal-oxide polymer photovoltaic devices have been intensively studied for more than two decades, as these devices offer potential advantages relative to organic acceptors, such as low cost, facile synthesis via wet chemical processing, control of heterojunction morphology, and the potential for higher physical and chemical stabilities [1]. A metal-oxide nanoparticle (TiO 2 , ZnO) percolation network with thickness in the submicron scale provides a stable and transparent backbone network for free carrier transport in this type of solar cells [2].…”

Section: Introductionmentioning

confidence: 99%

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

et al. 2019

View full text Add to dashboard Cite

This work focused on studying the influence of dyes, including a thiophene derivative dye with a cyanoacrylic acid group ((E)-2-cyano-3-(3′,3′′,3′′′-trihexyl-[2,2′:5′,2′′:5′′,2′′′- quaterthiophene]-5-yl) acrylicacid)(4T), on the photovoltaic performance of titanium dioxide (TiO2)/poly(3-hexyl thiophene)(P3HT) solar cells. The insertion of dye at the interface improved the efficiency regardless of the dye used. However, 4T dye significantly improved the efficiency by a factor of three when compared to the corresponding control. This improvement is mainly due to an increase in short circuit current density (JSC), which is consistent with higher hole-mobility reported in TiO2/P3HT nanocomposite with 4T dye. Optical absorption data further revealed that 4T extended the spectral response of the TiO2/P3HT nanocomposite, which could also enhance the JSC. The reduced dark current upon dye insertion ensured the carrier recombination was controlled at the interface. This, in turn, increased the open circuit voltage. An optimized hybrid TiO2/P3HT device with 4T dye as an interface modifier showed an average efficiency of over 2% under-simulated irradiation of 100 mWcm−2 (1 sun) with an Air Mass 1.5 filter.

show abstract

Section: Introductionmentioning

confidence: 99%

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A Wells‐Dawson polyoxometalate K 6 [P 2 W 18 O 62 ] acts as an interfacial layer in the photoanode of organic solar cell, with the polyoxometalate layer showing high anisotropic characters . The PW 9 O 34 lacunary phosphotungstate anion interlayer mediates the ZnO/TiO 2 electrode to improve the optoelectronic performance (6.51%) and stability of a polymer solar cell because the polyoxometalate passivates the electrode surface and repels the ambient species . [(C 8 H 17 ) 4 N] 4 [SiW 12 O 40 ] has been inserted into the cathode in polymer solar cells, suggesting the polyoxotungstate can reduce the work function of the metal contact and n‐dope the material .…”

Section: Polyoxotungstatementioning

confidence: 99%

“…191 The PW 9 O 34 lacunary phosphotungstate anion interlayer mediates the ZnO/TiO 2 electrode to improve the optoelectronic performance (6.51%) and stability of a polymer solar cell because the polyoxometalate passivates the electrode surface and repels the ambient species. 192 [(C 8 H 17 ) 4 N] 4 [SiW 12 O 40 ] has been inserted into the cathode in polymer solar cells, suggesting the polyoxotungstate can reduce the work function of the metal contact and n-dope the material. 193 The alkyl chain length in polyoxometalate is found to be critical for the polymer solar cell performance.…”

Section: Polyoxotungstatementioning

confidence: 99%

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Zhang

Chen

2020

Int J Energy Res

View full text Add to dashboard Cite

Summary Polyoxometalates could be viewed as the molecular counterpart of the metal oxides, which are essential ingredients for various energy conversion and storage applications. In this manuscript, we review the progress of engineering functional polyoxometalates toward energy applications, focusing on, but not limited to, polyoxotitanate, polyoxotungstate, and polyoxomolybdate. These polyoxometalates are considered to be promising candidates for dye‐sensitized solar cell, perovskite solar cell, lithium‐ion battery, lithium‐sulfur battery, supercapacitor, and water‐splitting system. We believe advanced energy devices with better performance could be derived from further engineering the polyoxometalates owing to their molecular design flexibility.

show abstract

“…Whereas various strategies have been proposed to covalently anchor POMs on oxide nanoparticles surface [21][22][23] or mesoporous silica, 24 very few examples describe the grafting of POMs on flat oxide substrates. 13,25 In these last examples, few attention has been devoted to the control of the density and the characterization of the interface. In the present work, to ensure a strong bond between the POMs and the oxide, the POM hybrids with a pendant carboxylic acid group TBA4.…”

Section: Introductionmentioning

confidence: 99%

Covalent Grafting of Polyoxometalate Hybrids onto Flat Silicon/Silicon Oxide: Insights from POMs Layers on Oxides

Laurans

Trinh

Francesca

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Immobilization of polyoxometalates (POMs) onto oxides is relevant to many applications in the fields of catalysis, energy conversion/storage or molecular electronics. Optimization and understanding the molecule/oxide interface is crucial to rationally improve the performance of the final molecular materials. We herein describe the synthesis and covalent grafting of POM hybrids with remote carboxylic acid functions onto flat Si/SiO2 substrates. Special attention has been paid to the characterization of the molecular layer and to the description of the POM anchoring mode at the oxide interface through the use of various characterization techniques, including ellipsometry, AFM, XPS and FTIR. Finally, electron transport properties were probed in a vertical junction configuration and energy level diagrams have been drawn and discussed in relation with the POM molecular electronic features inferred from cyclic-voltammetry, UVvisible absorption spectra and theoretical calculations. The electronic properties of these POMbased molecular junctions are driven by the POM LUMO (d-orbitals) whatever the nature of the tether or the anchoring group.

show abstract

A silanol-functionalized polyoxometalate with excellent electron transfer mediating behavior to ZnO and TiO₂ cathode interlayers for highly efficient and extremely stable polymer solar cells

Abstract: A silanol-functionalized polyoxometalate improves the electron collecting interface.

Cited by 25 publications

References 69 publications

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Covalent Grafting of Polyoxometalate Hybrids onto Flat Silicon/Silicon Oxide: Insights from POMs Layers on Oxides

Contact Info

Product

Resources

About

A silanol-functionalized polyoxometalate with excellent electron transfer mediating behavior to ZnO and TiO2 cathode interlayers for highly efficient and extremely stable polymer solar cells

Abstract: A silanol-functionalized polyoxometalate improves the electron collecting interface.

Cited by 25 publications

References 69 publications

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Covalent Grafting of Polyoxometalate Hybrids onto Flat Silicon/Silicon Oxide: Insights from POMs Layers on Oxides

Contact Info

Product

Resources

About

A silanol-functionalized polyoxometalate with excellent electron transfer mediating behavior to ZnO and TiO₂ cathode interlayers for highly efficient and extremely stable polymer solar cells