Highly Efficient Solar Cell Polymers Developed via Fine-Tuning of Structural and Electronic Properties

Liang, Yongye; Feng, Deqiang; Wu, Yue; Tsai, Szu Ting; Li, Gang; Ray, Claire; Yu, Luping

doi:10.1021/ja901545q

Cited by 1,348 publications

(1,129 citation statements)

References 32 publications

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“…111,112 Thienothiophene-Benzodithiophene-Based Polymer Yu et al synthesized a series of polymers with thieno [3,4-b]thiophene and benzodithiophene alternating units, termed PTB1 to PTB7. 113,114 A PCE of 7.4% was achieved for BHJ solar cells based on PTB7/PC 71 BM blends. 115,116 The PTBx series have the unique property that the chains order on the substrate in the face-on orientation.…”

Section: Reviewmentioning

confidence: 95%

On the morphology of polymer‐based photovoltaics

Liu

Jung

et al. 2012

J Polym Sci B Polym Phys

304

242

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We review the morphologies of polymer-based solar cells and the parameters that govern the evolution of the morphologies and describe different approaches to achieve the optimum morphology for a BHJ OPV. While there are some distinct differences, there are also some commonalities. It is evident that morphology and the control of the morphology are important for device performance and, by controlling the thermodynamics, in particular, the interactions of the components, and by controlling kinetic parameters, like the rate of solvent evaporation, crystallization and phase separation, optimized morphologies for a given system can be achieved. While much research has focused on P3HT, it is evident that a clearer understanding of the morphology and the evolution of the morphology in low bad gap polymer systems will increase the efficiency further. While current OPVs are on the verge of breaking the 10% barrier, manipulating and controlling the morphology will still be key for device optimization and, equally important, for the fabrication of these devices in an industrial setting.

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Section: Reviewmentioning

confidence: 95%

On the morphology of polymer‐based photovoltaics

Liu

Jung

et al. 2012

J Polym Sci B Polym Phys

304

242

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show abstract

“…4). 18 The benzodithiophene group substituted with dialkoxy solubilising sidechains both provides electron donating function, and also ensures that any torsional twist away from co-planarity caused by steric interaction with the co-monomers is minimized. The thieno [3,4-c]thiophene co-monomer reduces the band gap of the resulting polymer by stabilizing the quinoidal form of LUMO.…”

Section: Control Of Optical Band Gap Through Chain Conformationmentioning

confidence: 99%

Influence of blend microstructure on bulk heterojunction organic photovoltaic performance

et al. 2011

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This tutorial review discusses the factors influencing blend microstructure and performance in bulk heterojunction organic photovoltaic cells.Please check this proof carefully. Our staff will not read it in detail after you have returned it. Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read. Please pay particular attention to: tabulated material; equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please e-mail a list of corrections or the PDF with electronic notes attached --do not change the text within the PDF file or send a revised manuscript.Please bear in mind that minor layout improvements, e.g. in line breaking, table widths and graphic placement, are routinely applied to the final version.Please note that, in the typefaces we use, an italic vee looks like this: n, and a Greek nu looks like this: n.We will publish articles on the web as soon as possible after receiving your corrections; no late corrections will be made.Please return your final corrections, where possible within 48 hours of receipt, by e-mail to: chemsocrev@rsc.org Reprints-Electronic (PDF) reprints will be provided free of charge to the corresponding author. Enquiries about purchasing paper reprints should be addressed via: http://www.rsc.org/Publishing/ReSourCe/PaperReprints/. Costs for reprints are below: Q3The sentence beginning ''For example it has been shown. . .'' has been altered for clarity, please check that the meaning is correct. Q4The citation to ' Fig. 8(a)' in the sentence beginning 'Grazing-incidence X-ray diffraction (XRD) measurements. . .' has been changed to ' Fig. 10(a)' as the text appears to discuss ' Fig. 10(a)'. Please check that this is correct. Q5The citation to ' Fig. 8(b)' in the sentence beginning 'Upon annealing, P3HT chains begin to crystallize. . .' has been changed to ' Fig The performance of organic photovoltaic devices based upon bulk heterojunction blends of donor and acceptor materials has been shown to be highly dependent on the thin film microstructure. In this tutorial review, we discuss the factors responsible for influencing blend microstructure and how these affect device performance. In particular we discuss how various molecular design approaches can affect the thin film morphology of both the donor and acceptor components, as well as their blend microstructure. We further examine the influence of polymer molecular weight and blend composition upon device performance, and discuss how a variety of processing techniques can be used to control the blend microstructure, leading to improvements in solar cell efficiencies.

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“…The hole mobility of the pristine D(CATBTzT)BDT film has been measured using the space-charge-limited current (SCLC) method [45] as plotted in Fig. 6.…”

Section: Photovoltaic Propertiesmentioning

confidence: 99%

Benzo[1,2-b:4,5-b′]dithiophene and benzotriazole based small molecule for solution-processed organic solar cells

Chen

et al. 2014

Organic Electronics

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Highly Efficient Solar Cell Polymers Developed via Fine-Tuning of Structural and Electronic Properties

Cited by 1,348 publications

References 32 publications

On the morphology of polymer‐based photovoltaics

On the morphology of polymer‐based photovoltaics

Influence of blend microstructure on bulk heterojunction organic photovoltaic performance

Benzo[1,2-b:4,5-b′]dithiophene and benzotriazole based small molecule for solution-processed organic solar cells

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