Incorporation of liquid crystalline triphenylene derivative in bulk heterojunction solar cell with molybdenum oxide as buffer layer for improved efficiency

Bajpai, Manisha; Yadav, Neelam; Kumar, Sandeep; Srivastava, Ritu; Dhar, Ravindra

doi:10.1080/02678292.2016.1149239

Cited by 27 publications

(16 citation statements)

References 40 publications

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“…A review of the results obtained using DLC in the field of OSC can be found in reference [ 219 ], while the newest results will be presented here. Bajpai and coworkers studied how the presence of a layer of the 2,3,6,7,10,11-hexabutyloxytriphenylene mesogen can influence the performance of the classic bulk-heterojunction OSC formed by poly (3-hexylthiophene) and [ 6 , 6 ]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) [ 220 , 221 ]. They added the DLC layer between the hole extracting layer and the bulk heterojunction, studying the effect on two different devices ( Figure 35 ): in the first one, PEDOT:PSS was used as hole acceptor, while in the second one the hole acceptor was MoO 3 .…”

Section: Recent Advances In the Study Of Discotic Liquid Crystalsmentioning

confidence: 99%

Charge Mobility in Discotic Liquid Crystals

Termine

Golemme

2021

IJMS

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Discotic (disk-shaped) molecules or molecular aggregates may form, within a certain temperature range, partially ordered phases, known as discotic liquid crystals, which have been extensively studied in the recent past. On the one hand, this interest was prompted by the fact that they represent models for testing energy and charge transport theories in organic materials. However, their long-range self-assembling properties, potential low cost, ease of processability with a variety of solvents and the relative ease of tailoring their properties via chemical synthesis, drove the attention of researchers also towards the exploitation of their semiconducting properties in organic electronic devices. This review covers recent research on the charge transport properties of discotic mesophases, starting with an introduction to their phase structure, followed by an overview of the models used to describe charge mobility in organic substances in general and in these systems in particular, and by the description of the techniques most commonly used to measure their charge mobility. The reader already familiar or not interested in such details can easily skip these sections and refer to the core section of this work, focusing on the most recent and significant results regarding charge mobility in discotic liquid crystals.

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Section: Recent Advances In the Study Of Discotic Liquid Crystalsmentioning

confidence: 99%

Charge Mobility in Discotic Liquid Crystals

Termine

Golemme

2021

IJMS

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“…The increase in conductivity is due to the increased amount of Pc. The π ‐conjugation in the rigid side‐chain allows π ‐electron transfer along the column longitudinal axis, which can enhance the self‐healing ability and self‐assembly into one‐dimensional ordering …”

Section: Resultsmentioning

confidence: 99%

Supramolecular complexes based on liquid‐crystalline polysiloxanes and copper phthalocyanine

Kong

Song

Bai

et al. 2018

Polymer International

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Self‐assembly of mesogens in one polymer system reflects the capability for integrating intermolecular interactions and functions of materials. A series of novel supramolecular complexes (SCPs) containing cholesterol derivatives, siloxane backbone and copper phthalocyanine were synthesized. The SCPs were made from sulfonic acid‐containing precursor polymers (SAPs) synthesized by the use of 4‐(allyloxy)benzenesulfonic acid, cholest‐5‐en‐3‐ol‐(3β)‐4‐(allyloxy)benzoate and polymethylhydrosiloxane. Differential scanning calorimetry, polarizing optical microscopy and X‐ray diffraction results confirmed the mesomorphic properties. The SAPs showed smectic phase, but the SCPs showed columnar phase due to more lateral copper phthalocyanine groups in the polymer systems. Moreover, because of rigid side groups and cholesteric polymer, SCPs showed greater d‐spacings between the side mesogenic groups and exhibited very good electrical conductivity. © 2018 Society of Chemical Industry

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“…The effect of the molecular structure of monomeric triphenylenes on their liquid crystal properties has been widely studied . Beyond these fundamental studies, the 1‐D energy or charge transport of triphenylenes along the columnar axis have been thoroughly explored, targeting their use in OLEDS, OFETs, and solar cells …”

Section: Introductionmentioning

confidence: 99%

Mesomorphic properties of linear and branched new triphenylene‐based poly(ester‐ether)s

Suburu

Cecchi

D’Accorso

et al. 2020

Journal of Polymer Science

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A series of main chain discotic liquid crystal polymers, synthesized following a new approach based on the incorporation of triphenylene units in both comonomers, show ordered columnar mesophases in a very wide thermal range, including room temperature. The introduction of branching points based on the same kind of triphenylene units increases their thermal range and gives rise to glassy low-temperature phases. Room temperature extrusion of these polymers yields fibers with molecules oriented perpendicular to the mechanical stress, and an orientational order parameter close to 0.5, which slightly increases for branched polymers. K E Y W O R D S branched polymers, columnar liquid crystal, main-chain liquid crystalline polymers, poly(esterether)s, triphenylene

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Incorporation of liquid crystalline triphenylene derivative in bulk heterojunction solar cell with molybdenum oxide as buffer layer for improved efficiency

Cited by 27 publications

References 40 publications

Charge Mobility in Discotic Liquid Crystals

Charge Mobility in Discotic Liquid Crystals

Supramolecular complexes based on liquid‐crystalline polysiloxanes and copper phthalocyanine

Mesomorphic properties of linear and branched new triphenylene‐based poly(ester‐ether)s

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