High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends

Li, Gang; Shrotriya, Vishal; Huang, Jinsong; Yao, Yan; Moriarty, T.; Emery, K.; YANG, YANG

doi:10.1142/9789814317665_0012

Cited by 522 publications

(736 citation statements)

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“…This is assumed due to an essential role of electron delocalization in PCBM aggregates for efficient charge separation. In the case of crystalline polymers such as poly(3-hexylthiophene) 33,34) and high performing LBPs, 35) the 1:1 blend ratio (50 wt%) is often optimal, because self-assembling nature of polymer concurrently promotes the growth of PCBM aggregates. In the present case, BTT-TP is amorphous, while BTT-FT and BTT-NTz are more crystalline, as evidenced by X-ray diffraction (vide infra).…”

Section: Resultsmentioning

confidence: 99%

Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers

Al-Naamani

Ide

Gopal

et al. 2015

J. Photopol. Sci. Technol.

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Section: Resultsmentioning

confidence: 99%

Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers

Al-Naamani

Ide

Gopal

et al. 2015

J. Photopol. Sci. Technol.

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“…[1, 5,6] Unfortunately, many organic semiconductors have poor solubility in non-halogenated solvents; a property that results in the formation of non-uniform thin-films that have poor photocurrent generating properties when fabricated into an OPV.…”

Section: Introductionmentioning

confidence: 99%

Organic photovoltaic devices with enhanced efficiency processed from non-halogenated binary solvent blends

Griffin

Pearson

Scarratt

et al. 2015

Organic Electronics

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ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. The development of processing routes to fabricate organic photovoltaic devices (OPVs) using nonhalogenated solvents is a necessary step towards their eventual commercialisation. To address this issue, Organic Photovoltaic Devices With Enhanced Efficiency Processedwe have used Hansen solubility parameter analysis to identify a non-halogenated solvent blend based on a mixture of carbon disulfide and acetone. This solvent blend was then used to deposit a donor-acceptor polymer -fullerene thin-film that was then used as the active layer of bulk-heterojunction OPV. For the benchmark polymer:fullerene system PCDTBT:PC 70 BM, a power conversion efficiency of 6.75% was achieved; a 20% relative improvement over reference cells processed using the chlorinated-solvent chlorobenzene. Improvements in device efficiency are attributed to an increase in electron and hole conductivity resulting from enhanced fullerene crystallisation; a property that leads to enhanced device efficiency through improved charge extraction.

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“…[96] Craighead and coworkers have used scanned electrospinning [97] to deposit single nanowires of polyaniline [98] and poly(3-hexylthiophene) [92] on a rotating substrate, while Xia and coworkers have developed an approach to deposit uniaxial collections of nanofibers of a range of inorganic and organic materials. [99,100] Using a procedure that involves stacking spin-coated films of conjugated polymers, followed by nanoskiving, we have generated nanowires with rectangular cross sections individually, in bundles, or in parallel, with high pitch. [75] We began by spin-coating two conjugated polymers, poly(benizimidazo-benzophenantrholine) ladder (BBL) and poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) alternately on the same substrate, such that fifty 100-nm-thick layers of BBL were separated by fifty 100-nm-thick layers of MEH-PPV.…”

Section: Fabrication Of Chemoresistive Conjugated Polymer Nanowiresmentioning

confidence: 99%

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

2011

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Lead-InThis paper reviews nanoskiving-a simple and inexpensive method of nanofabrication, which minimizes requirements for access to cleanrooms and associated facilities, and which make it possible to fabricate nanostructures from materials, and of geometries, to which more familiar methods of nanofabrication are not applicable. Nanoskiving requires three steps: i) deposition of a metallic, semiconducting, ceramic, or polymeric thin film onto an epoxy substrate; ii) embedding this film in epoxy, to form an epoxy block, with the film as an inclusion; and iii) sectioning the epoxy block into slabs with an ultramicrotome. These slabs, which can be 30 nm -10 µm thick, contain nanostructures whose lateral dimensions are equal to the thicknesses of the embedded thin films. Electronic applications of structures produced by this method include nanoelectrodes for electrochemistry, chemoresistive nanowires, and 4 heterostructures of organic semiconductors. Optical applications include surface plasmon resonators, plasmonic waveguides, and frequency-selective surfaces.

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High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends

Cited by 522 publications

References 0 publications

Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers

Study of Photoelectric Conversion in Benzotrithiophene-Based Conjugated Semiconducting Polymers

Organic photovoltaic devices with enhanced efficiency processed from non-halogenated binary solvent blends

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

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