Progress with Light-Emitting Polymers

Bernius, Mark T.; Inbasekaran, M.; O’Brien, James J.; Wu, Wenbing

doi:10.1002/1521-4095(200012)12:23<1737::aid-adma1737>3.0.co;2-n

Cited by 1,186 publications

(806 citation statements)

References 36 publications

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“…[101][102][103][104] OLEDs in general are widely explored and are already in use for display and lighting applications. The layer structure of PLEDs is almost identical to organic solar cells with a light-emitting layer instead of a light-absorbing layer as seen in Figure 5.…”

Section: Thin Film Transistorsmentioning

confidence: 99%

Roll‐to‐Roll fabrication of large area functional organic materials

Søndergaard

Hösel

Krebs

2012

J Polym Sci B Polym Phys

963

743

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With the prospect of extremely fast manufacture of very low cost devices, organic electronics prepared by thin film processing techniques that are compatible with roll-toroll (R2R) methods are presently receiving an increasing interest. Several technologies using organic thin films are at the point, where transfer from the laboratory to a more production-oriented environment is within reach. In this review, we aim at giving an overview of some of the R2R-compatible techniques that can be used in such a transfer, as well the current status of R2R application within some of the existing research fields such as organic photovoltaics, organic thin film transistors, light-emitting diodes, polymer electrolyte membrane fuel cells, and electrochromic devices.

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Section: Thin Film Transistorsmentioning

confidence: 99%

Roll‐to‐Roll fabrication of large area functional organic materials

Søndergaard

Hösel

Krebs

2012

J Polym Sci B Polym Phys

963

743

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“…[8]. As contrary to ZnO n-type polymers are limited and their conductivity is low due to some problems like difficulty in synthesizing, poor solubility and stability in air [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of the polymer emission on the electroluminescence characteristics of n-ZnO nanorods/p-polymer hybrid light emitting diode

et al. 2011

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Hybrid light emitting diodes (LEDs) based on zinc oxide (ZnO) nanorods and polymers (single and blended) are fabricated and characterized. The ZnO nanorods were grown by the chemical bath deposition method at 50 o C. Three different LEDs, either with blue emitting, orange-red emitting or their blended polymer together with ZnO nanorods were fabricated and studied. The current-voltage characteristics show good diode behavior with ideality factor in the range of 2.1 to 2.27 for all the three devices. The electroluminescence spectrum (EL) of the blended device has an emission range from 450nm to 750nm, due to the intermixing of the blue emission generated by the poly(9,9-dioctylfluorene) denoted as PFO with orange red emission produced by the poly(2-methoxy-5(20-ethyl-hexyloxy)-1,4-phenylenevinylene) 1,4-phenylenevinylene) symbolize as MEH PPV combined with the deep band emission (DBE) of the ZnO nanorods i.e. it covers the whole visible region and manifested as white light. The CIE colour coordinates showed bluish, orange-red and white emission from the PFO, MEH PPV and blended LEDs with ZnO nanorods, respectively. These results indicate that the choice of the polymer with proper concentration is critical to the emitted colour in ZnO nanorods/p-organic polymers LEDs and careful design should considered to obtain intrinsic white light sources.

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“…The present work clearly illustrates the applicability to organic bilayer systems such as OTFTs and organic light emitting diodes. 41 A clear extension of the method is to examine systems with non-planar interfaces, measuring the complex structure as a function of depth that occur, for example, in bulk heterojunction excitonic solar cells. 42,43 In addition, numerous inorganic systems including oxide heterostructures 44 contain buried functional interfaces where differences in optical properties at other absorption edges can be exploited.…”

Section: Discussionmentioning

confidence: 99%

Topographic measurement of buried thin-film interfaces using a grazing resonant soft x-ray scattering technique

et al. 2014

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The internal structures of thin films, particularly interfaces between different materials, are critical to system properties and performance across many disciplines, but characterization of buried interface topography is often unfeasible. In this work, we demonstrate that Grazing Resonant Soft X-ray Scattering (GRSoXS), a technique using diffusely scattered soft X-rays in grazing incidence geometry, can reveal the statistical topography of buried thin film interfaces. By controlling and predicting the X-ray electric field intensity throughout the depth of the film and simultaneously the scattering contrast between materials, we are able to unambiguously identify the microstructure at different interfaces of a model polymer bilayer system. We additionally demonstrate the use of GRSoXS to selectively measure the topography of the surface and buried polymer-polymer interface in an organic thin film transistor, revealing different microstructure and markedly differing evolution upon annealing. In such systems, where only indirect control of interface topography is possible, accurate measurement of the structure of interfaces for feedback is critically important. While we demonstrate the method here using organic materials, we also show that the technique is readily extendable to any thin film system with elemental or chemical contrasts exploitable at absorption edges.

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Progress with Light-Emitting Polymers

Cited by 1,186 publications

References 36 publications

Roll‐to‐Roll fabrication of large area functional organic materials

Roll‐to‐Roll fabrication of large area functional organic materials

Effect of the polymer emission on the electroluminescence characteristics of n-ZnO nanorods/p-polymer hybrid light emitting diode

Topographic measurement of buried thin-film interfaces using a grazing resonant soft x-ray scattering technique

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