Recent progress in organic photovoltaics: device architecture and optical design

Cao, Weiran; Xue, Jiangeng

doi:10.1039/c4ee00260a

Cited by 333 publications

(253 citation statements)

References 260 publications

(345 reference statements)

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“…Active layers of organic photovoltaics (OPVs) 1 are typically fabricated using chloroarene solvents such as chlorobenzene. Large-scale fabrication 2 of OPVs using these solvents is challenging because chloroarenes have signicant health and environmental hazards.…”

Section: Introductionmentioning

confidence: 99%

Fabrication conditions for efficient organic photovoltaic cells from aqueous dispersions of nanoparticles

et al. 2014

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For environmentally friendly and cost-effective manufacturing of organic photovoltaic (OPV) cells, it is highly desirable to replace haloarenes with water as the active layer fabrication solvent. Replacing an organic solvent with water requires retooling the device fabrication steps. The optimization studies were conducted using poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61 butyric acid methyl ester (PCBM) as active layer materials. These materials were dispersed in water as blend and separate nanoparticles using the miniemulsion method. Topologies of the active layers were investigated using atomic force microscopy and electron microscopy techniques. We have identified two essential steps to fabricate efficient OPVs from aqueous dispersions: (1) treatment of the hole-transport layer with UV-O 3 to make the surface hydrophilic and (2) the use of an electron-transporting buffer layer for efficient charge extraction. We have also identified relative humidity and substrate temperature as key fabrication parameters for obtaining uniform active layer films. The OPV devices were fabricated using PEDOT:PSS as the hole-transport layer and PCBM as electron-transport layer with Ca/Al as the counter electrode.Efficiencies of 2.15% with a fill factor over 66% were obtained; the efficiency and the fill-factor is the highest among all aqueous processing of P3HT-PCBM nanoparticle solar cells.

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Section: Introductionmentioning

confidence: 99%

Fabrication conditions for efficient organic photovoltaic cells from aqueous dispersions of nanoparticles

et al. 2014

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“…Organic materials are intrinsically compatible with flexible substrates and high-throughput, roll-to-roll manufacturing processes. Hence, they are ideally suited for the fabrication of large-area electronic and optoelectronic devices with low cost (for a review, see [1] and references therein). Moreover, the electronic and optical properties of organic semiconductors can be tuned to a large extent by appropriate structural modifications, leading to materials with tailored properties for specific applications [2].…”

Section: Introductionmentioning

confidence: 99%

Organic photovoltaics without p–n junctions: a computational study of ferroelectric columnar molecular clusters

Sobolewski

2015

Phys. Chem. Chem. Phys.

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Structural and electronic properties of ferroelectric columnar clusters constructed from benzene-1,3,5-tricarboxylic acid, (B3CA)n, were investigated at the Hartree-Fock level. It is shown that B3CA stacks form helix-shaped molecular tubes which are stabilized by intermolecular hydrogen bonds. It is furthermore shown that the strong electric field generated by the uniaxial alignment of the carboxyl groups can split an optically prepared exciton into an electron-hole pair and can drive the charge carriers to the opposite ends of the tube. Some consequences of the phenomenon for photovoltaic applications are discussed.

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“…(Cao andXue 2014, 2124) 2. For a discussion of this stage of the project, see (Krzywoszynska et al 2016).…”

Section: Acknowledgementsmentioning

confidence: 99%

Opening Up the Participation Laboratory

Krzywoszynska

Watson

Buckley

et al. 2018

Science, Technology, & Human Values

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How to embed reflexivity in public participation in techno-science, and to open it up to the agency of publics, are key concerns in current debates. There is a risk of engagements being limited to by participation experts, particularly in upstream techno-sciences I by engaging localized, self-assembling publics in ways that respect and mobilize their ecologies of participation. Our innovative reflexive methodology introduced participatory methods to public engagement with upstream techno-science, with the public contributing to both the content and format of the project. This experience drew our attention to the largely overlooked issue of temporalities of participation, and the co-production of futures and publics in participation methodologies. We argue that many public participation methodologies are underpinned by the open futures model which imagines the future as a space of unrestrained creativity. We contrast it with the lived futures model typical of localized publics, which respects latency of materials and processes, but imposes limits on creativity. We argue that to continue being societally relevant and scientifically important, public participation methods should reconcile the open future of research with lived futures of localized publics.

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Recent progress in organic photovoltaics: device architecture and optical design

Cited by 333 publications

References 260 publications

Fabrication conditions for efficient organic photovoltaic cells from aqueous dispersions of nanoparticles

Fabrication conditions for efficient organic photovoltaic cells from aqueous dispersions of nanoparticles

Organic photovoltaics without p–n junctions: a computational study of ferroelectric columnar molecular clusters

Opening Up the Participation Laboratory

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