Efficient photodiodes from interpenetrating polymer networks

Halls, J. J. M.; Walsh, Caroline; Greenham, Neil C.; Marseglia, E.; Friend, Richard H.; Moratti, Stephen C.; Holmes, Andrew B.

doi:10.1038/376498a0

Cited by 3,208 publications

(2,135 citation statements)

References 19 publications

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“…At the device scale, the demonstration that conjugated polymers (CPs) can be successfully exploited in light-emitting diodes, [1][2][3] field-effect transistors, 4 or photodiodes 5,6 has led to the emergence of a new area in electronics, referred to as "plastic electronics".…”

Section: Introductionmentioning

confidence: 99%

Excitation Migration along Oligophenylenevinylene-Based Chiral Stacks: Delocalization Effects on Transport Dynamics

et al. 2005

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Atomistic models based on quantum-chemical calculations are combined with time-resolved spectroscopic investigations to explore the migration of electronic excitations along oligophenylenevinylene-based chiral stacks. It is found that the usual Pauli master equation (PME) approach relying on uncoherent transport between individual chromophores underestimates the excitation diffusion dynamics, monitored here by the time decay of the transient polarization anisotropy. A better agreement to experiment is achieved when accounting for excitation delocalization among acceptor molecules, as implemented in a modified version of the PME model. The same models are applied to study light harvesting and trapping in guest-host systems built from oligomers of different lengths.

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Section: Introductionmentioning

confidence: 99%

Excitation Migration along Oligophenylenevinylene-Based Chiral Stacks: Delocalization Effects on Transport Dynamics

et al. 2005

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“…In addition to attractive aspects of selfassembly, specific phase domain morphologies obtained result in increased efficiency of various devices. For instance, multilayer morphology is used in gasseparating membranes [33] and polymeric photodiodes [34]. Column-like morphology is present in light emitting polymeric diodes with a variable colour [35] or in anti- reflection coatings [36].…”

Section: Introductionmentioning

confidence: 99%

Surface-directed phase separation in nanometer polymer films: self-stratification and pattern replication

et al. 2002

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Phase separation occurs in thin films of polymer blends when molecular mobility is promoted by a temperature above the glass transition but inside the twophase region (temperature quench), or a common solvent added to the polymers (solvent quench). This phenomenon can be altered by a homogeneous surface or pre-patterned substrate, resulting, e.g., in self-stratification or pattern replication, respectively. Such self-organisation processes ordering polymer phases were observed for model polymer blends (deuterated/hydrogenated polystyrene, dPS/hPS, and deuterated/partially brominated PS, dPS/PBrS, both with hPSpolyisoprene diblocks added; dPS/poly(vinylpyridine) and PBrS/PVP) with highresolution ion beam techniques (Nuclear Reaction Analysis, profiling and mapping mode of dynamic Secondary Ion Mass Spectrometry) and Atomic Force Microscopy. The self-stratification process is strongly affected by both the range as well as the strength of the surface/polymer interactions. This is illustrated for the temperature-quenched blends with surface-active copolymer additives tuning the interactions exerted by both external surfaces. The pattern transfer from the substrate to the films is demonstrated for the solvent-quenched blends. Patterndirected composition variations (SIMS maps) coincide with free surface undulations (AFM images). The most effective pattern replication is achieved for the length scale of phase domain morphology comparable with the pattern periodicity and for carefully adjusted polymer/substrate interactions.

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“…These two can be arranged in a planar geometry, in a bilayer of two different molecules (Tang 1986). They may also be blended in a bulk heterojunction, a mixture of two different polymer/ polymer (Halls et al 1995), molecule/molecule or polymer/ molecule system (Yu et al 1995). In all these three cases is the interface between a donor and an acceptor the critical point where charges are generated.…”

Section: Introductionmentioning

confidence: 99%

Alternating Copolymers and Alternative Device Geometries for Organic Photovoltaics

Inganäs

Zhang

Andersson

2012

AMBIO

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The efficiency of conversion of light to electrical energy with the help of conjugated polymers and molecules is rapidly improving. The optical absorption properties of these materials can be designed, and implemented via molecular engineering. Full coverage of the solar spectrum is thus feasible. Narrow absorption spectra allow construction of tandem solar cells. The poor transport properties of these materials require thin devices, which limits optical absorption. Alternative device geometries for these flexible materials compensate for the optical absorption by light trapping, and allow tandem cells.

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Efficient photodiodes from interpenetrating polymer networks

Cited by 3,208 publications

References 19 publications

Excitation Migration along Oligophenylenevinylene-Based Chiral Stacks: Delocalization Effects on Transport Dynamics

Excitation Migration along Oligophenylenevinylene-Based Chiral Stacks: Delocalization Effects on Transport Dynamics

Surface-directed phase separation in nanometer polymer films: self-stratification and pattern replication

Alternating Copolymers and Alternative Device Geometries for Organic Photovoltaics

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