Fullerene Bisadducts for Enhanced Open‐Circuit Voltages and Efficiencies in Polymer Solar Cells

Lenes, Martijn; Wetzelaer, Gert‐Jan A. H.; Kooistra, Floris B.; Veenstra, Sjoerd; Hummelen, Jan C.; Blom, Paul W. M.

doi:10.1002/adma.200702438

Cited by 583 publications

(477 citation statements)

References 23 publications

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“…Devices made with blends of this fullerene with P3HT show an increase in V oc of 100 meV, with comparable electron mobilities and photocurrent to the P3HT device, despite the fact that bis-PCBM exists as several isomers. 22 Continuing the trend, tris-PCBM adducts have recently been reported as an inseparable multi-isomer blend. As expected the electron affinity is further decreased, and blend devices show an enhancement of photovoltage of 100 meV over the bisadducts.…”

Section: Factors Influencing the Structure And Performance Of Fullerementioning

confidence: 73%

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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Section: Factors Influencing the Structure And Performance Of Fullerementioning

confidence: 73%

Influence of blend microstructure on bulk heterojunction organic photovoltaic performance

et al. 2011

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“…80 Of particular note are the ''bisPCBM" acceptors, which demonstrated that the fullerene sphere can actually be improved as an acceptor, due to band modifications, when substituted more than once. 81 Subsequent work on indene-substituted C 60 have proved to be of great interest. 82 To rectify one of the problems with PCBM (namely its tendency to undergo excessive crystallization), research has effectively demonstrated the use of cross-linking groups.…”

Section: Figurementioning

confidence: 99%

Block copolymer strategies for solar cell technology

Topham¹,

Parnell²,

Hiorns³

2011

J Polym Sci B Polym Phys

186

169

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A simple overview of the methods used and the expected benefits of block copolymers in organic photovoltaic devices is given in this review. The description of the photovoltaic process makes it clear how the detailed self-assembly properties of block copolymers can be exploited. Organic photovoltaic technology, an inexpensive, clean and renewable energy source, is an extremely promising option for replacing fossil fuels. It is expected to deliver printable devices processed on flexible substrates using high-volume techniques. Such devices, however, currently lack the long-term stability and efficiency to allow organic photovoltaics to surpass current technologies. Block copolymers are envisaged to help overcome these obstacles because of their long term structural stability and their solid-state morphology being of the appropriate dimensions to efficiently perform charge collection and transfer to electrodes.

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“…1(c)). [32][33][34][35] These two materials are therefore useful for extending the range of LUMO levels of fullerenes for the current investigation and may also give insight into degradation mechanisms applicable to BHJ solar cells.…”

Section: Introductionmentioning

confidence: 99%

Soluble fullerene derivatives: The effect of electronic structure on transistor performance and air stability

Ball

Bouwer

Kooistra

et al. 2011

Journal of Applied Physics

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The family of soluble fullerene derivatives comprises a widely studied group of electron transporting molecules for use in organic electronic and optoelectronic devices. For electronic applications, electron transporting (n-channel) materials are required for implementation into organic complementary logic circuit architectures. To date, few soluble candidate materials have been studied that fulfill the stringent requirements of high carrier mobility and air stability. Here we present a study of three soluble fullerenes with varying electron affinity to assess the impact of electronic structure on device performance and air stability. Through theoretical and experimental analysis of the electronic structure, characterization of thin-film structure, and characterization of transistor device properties we find that the air stability of the present series of fullerenes not only depends on the absolute electron affinity of the semiconductor but also on the disorder within the thin-film.

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Fullerene Bisadducts for Enhanced Open‐Circuit Voltages and Efficiencies in Polymer Solar Cells

Cited by 583 publications

References 23 publications

Influence of blend microstructure on bulk heterojunction organic photovoltaic performance

Influence of blend microstructure on bulk heterojunction organic photovoltaic performance

Block copolymer strategies for solar cell technology

Soluble fullerene derivatives: The effect of electronic structure on transistor performance and air stability

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