New acceptor–π-porphyrin–π-acceptor systems for solution-processed small molecule organic solar cells

Arrechea, Susana; Molina‐Ontoria, Agustín; Aljarilla, Ana; Cruz, Pilar de la; Langa, Fernando; Echegoyen, Luís

doi:10.1016/j.dyepig.2015.04.037

Cited by 33 publications

(14 citation statements)

References 45 publications

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“…Firstly, the trimethylsilyl group was quantitatively removed by reaction with TBAF and this was followed by copper-free Pd-catalysed Sonogashira coupling [22] with 2-iodothiophene derivatives 3aeb [23,24] Under these conditions, the reaction proceeded smoothly to afford aldehydes 4a,b in 83% and 80% yield, respectively. Subsequent Knoevenagel condensation of 4a,b with cyanoacetic acid, using piperidine as base, yielded 1a,b in 89% and 82% yields, respectively, after purifi-cation by column chromatography (silica gel, chloroform: methanol 10:1).…”

Section: Resultsmentioning

confidence: 99%

Charge recombination losses in thiophene-substituted porphyrin dye-sensitized solar cells

et al. 2016

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a b s t r a c tTwo new porphyrins that incorporate thiophene substituents as spacers between the conjugated porphyrin core and the anchoring cyanoacrylate group have been synthesised. The two dyes differ in the number of thiophene bridges; porphyrin 1a has only one thiophene group and porphyrin 1b has two thiophene rings connected by a double bond. The measured light-toenergy conversion efficiencies in 1a and 1b were assessed using two different electrolytes, LP1 and LP2, which differ in the presence of tert-butyl pyridine in LP1. An efficiency of 6% under standard measurement conditions has been achieved for 1a þ LP1. However, for porphyrin 1b the use of electrolyte LP1 led to lower efficiencies and a value of approximately 4% was obtained. The differences between the two types of solar cells and the electrolytes have been studied in-depth using photoinduced time-resolved techniques such as CE (Charge Extrac-tion) and TPV (Transient PhotoVoltage).

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Section: Resultsmentioning

confidence: 99%

Charge recombination losses in thiophene-substituted porphyrin dye-sensitized solar cells

et al. 2016

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“…The acceptor‐π‐ZnP‐π‐acceptor system for solution‐processed small‐molecule organic solar cell. The ITO/(PEDOT:PSS)/(Porphyrin:PC 71 BM) (1:2, w:w )/Ca/Al cell construction was used …”

Section: Influence Of Progress Of the Porphyrin Design For Porphyrin‐mentioning

confidence: 99%

Evolution of Molecular Design of Porphyrin Chromophores for Photovoltaic Materials of Superior Light‐to‐Electricity Conversion Efficiency

2017

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Zinc porphyrins (ZnPs) attract high interest as efficient chromophores for dye-sensitized solar cells (DSSCs). Progress in the molecular design and solar cell materials led to a record of 13% power conversion efficiency of porphyrin-sensitized solar cells. Until recently, ZnPs were limitedly used in bulk-heterojunction solar cells (BHJ SC). However, application of porphyrin chromophores designed for DSSCs to BHJ SCs has rapidly increased the efficiency of the latter with both small-molecule and polymer ZnP donors. Herein, we briefly review the developmental history of molecular design of ZnPs for DSSCs, and illustrate the influence of this development on the design of small-molecule and polymer ZnP donors for BHJ SCs.

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“…Increasing of photo conversion efficiency is the main purpose in formulation of solar cells, so the donor-acceptor pairs are carefully designed. Recently two new conjugated acceptor-donor-acceptor (A--D--A) compounds having a Zn-porphyrin acting as donor and linked by ethynylenes to one or two units of thienylenevinylene and capped by dicyanovinylene groups as acceptor units have been obtained and their photophysical properties were investigated [53].…”

Section: Photoactive Porphyrin-polymers For Solar Cells-recent Develomentioning

confidence: 99%

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

Fagadar‐Cosma

Făgădar-Cosma

Bîrdeanu

2016

J. Res. Updates Polym. Sci.

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Porphyrins are versatile multifunctional biomimetic molecules that are obtained by condensation of pyrrole with the desired aromatic aldehydes. The porphyrin structure can be synthetically modified by either introduction of various peripheral functional groups or metals in its core, allowing creation of various porphyrin derivatives that exhibit amazing optoelectronic properties. This feature makes porphyrins molecules extremely useful especially in hybrid combination with photonic, electronic and magnetic compounds. This review is focused on the more recently obtained porphyrin-polymeric materials and on their various analytical, industrial and medical applications. The study underlines the assembling capacity of these porphyrin-polymer hybrids to form supramolecular tunable architectures by means of the association of more building block units. Porphyrin-polymer nano-and micro-materials play a preeminent role in sensing applications involving chromophores in the formulation of organic solar cells-due to their capacity to generate photo induced charge separation centers-and as new materials with interesting catalytic properties. Besides these technical applications, the photobactericidal activity of these porphyrin-polymer materials was evaluated against Gram positive and Gram negative strains bacteria and they represent an alternative to antibiotics in order to overcome the growing bacterial multiresistance. Polymer functionalization with porphyrin is commonly used to overcome some drawbacks such as self-quenching and photo-toxicity to the skin produced by the bare porphyrins, when used as photosensitizers in the non-invasive Photodynamic therapy of cancer (PDT).

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New acceptor–π-porphyrin–π-acceptor systems for solution-processed small molecule organic solar cells

Cited by 33 publications

References 45 publications

Charge recombination losses in thiophene-substituted porphyrin dye-sensitized solar cells

Charge recombination losses in thiophene-substituted porphyrin dye-sensitized solar cells

Evolution of Molecular Design of Porphyrin Chromophores for Photovoltaic Materials of Superior Light‐to‐Electricity Conversion Efficiency

Hybrid Porphyrin-Polymeric Materials and their Amazing Applications: A Review

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