There are only a few
organic semiconductors in the world affording such a high solar cell efficiency.
Not exact matches
Natelson's research involves complicated electron flow through single - molecule transistors, as well as
organic semiconductors — carbon - based materials that are intended to replace silicon transistors
in some electronic devices.
In the paper published in Nature Energy, the researchers described how they used organic semiconductors — contorted hexabenzocoronene (cHBC) derivatives — for constructing the solar cell
In the paper published
in Nature Energy, the researchers described how they used organic semiconductors — contorted hexabenzocoronene (cHBC) derivatives — for constructing the solar cell
in Nature Energy, the researchers described how they used
organic semiconductors — contorted hexabenzocoronene (cHBC) derivatives — for constructing the solar cells.
Neon is well known for being the most unreactive element and is a key component
in semiconductor manufacturing, but neon has never been studied within an
organic or metal -
organic framework until now.
And as a basis for gas sensors
in particular, carbon nanotubes combine advantages (and avoid shortcomings) of more established materials, such as polymer - based
organic electronics and solid - state metal - oxide
semiconductors.
Even at this stage, off - center spin coating produced transistors with a range of speeds much faster than those of previous
organic semiconductors and comparable to the performance of the polysilicon materials used
in today's high - end electronics.
While conventional LEDs use silicon
semiconductors, OLEDs
in some of the latest cell phones and TVs are made with «pi - conjugated polymers,» which are plastic - like,
organic semiconductors made of a chain of repeating molecular units.
Alán Aspuru - Guzik, a theoretical chemist at Harvard University
in Cambridge, Massachusetts, and his colleagues, used computational models to screen a family of
organic molecules and identify those likely to be the best
semiconductors.
The latest molecule is one of the best
organic semiconductors yet discovered,
in terms of its ability to transport electric charge.
«We're working with a crystalline
semiconductor called rubrene, which is an
organic, carbon - based material that has performance factors, such as charge - carrier mobility, surpassing those measured
in amorphous silicon.
These contributions «represent a significant step forward
in structure - function relationships
in organic semiconductors, critical for the development of the next generation of flexible electronic devices,» the authors point out.
Their results for the
organic semiconductors 4T and P3HT showed that the guest molecules — quite contrary to the expectations — are not uniformly incorporated
in the host lattice at all.
«It is important to understand the fundamental processes involved
in the molecular electrical doping of
organic semiconductors more precisely,» explains Salzmann, continuing: «If we want to successfully employ these kinds of materials
in applications, we need to be able to control their electronic properties just as precisely as we customarily do today with inorganic
semiconductors.»
In the experiments run by Marinescu's group, they used a cobalt - based metal -
organic framework that mimicked the conductivity of both a metal and
semiconductor at different temperatures.
These somewhat contradictory theories, none of which is universally valid for all cases, have now been unified by Oehzelt and developed into a single coherent model based on the electrostatic potential caused by the charge carriers
in the metal and the
organic semiconductor.
Therefore,
organic dyes are promising lightweight materials for application as e.g.
organic semiconductors, but also
in for instance LCD displays or solar cells.
Among these materials,
organic semiconductors have received much attention for use
in next - generation OEDs because of the potential for low - cost and large - area fabrication using solution processing.
PARC has developed jet - printing processes for
organic semiconductors (including all - printed TFT arrays, pictured) and conductors — resulting
in novel functionality and reduced manufacturing costs.
Kaveh - Baghbadorani has been exploring the development of hybrid metal /
organic semiconductor nanowires that work as an energy pump to compensate for energy losses
in the metal coating.
He has made seminal contributions
in organic low - dimensional conductors,
semiconductors, and magnetic materials.
HCharge transport
in organic semiconductors: influence of processing and doping (SEMICONDUCTORS AN
semiconductors: influence of processing and doping (
SEMICONDUCTORS AN
SEMICONDUCTORS AND NANODEVICES)
Bob Crabtree (catalysts and ligand design) Ana Moore (antenna synthesis, characterization of energy / charge transfer) Tom Moore (design of bioinspired photocatalytic assemblies) Eric Bittner (EB)(charge transport
in organic electronics,
organic photovoltaics) Charlie Schmuttenmaer (
semiconductor materials + spectroscopy of carriers) Gary Brudvig (natural photosynthesis and biomimetic systems + EPR spectroscopy + electrochemistry) Peter Rossky (modeling
organic PV) Mark Ratner (modeling transport,
organic electronics) Victor Batista (modeling PSII and DSSC)
Technical details of these research topics focus on light - induced electron transfer reactions, both at surfaces and
in transition - metal complexes, surface chemistry and photochemistry of
semiconductor / liquid interfaces, novel uses of conducting
organic polymers and polymer / conductor composites, and development of sensor arrays that use pattern recognition algorithms to identify odorants, mimicking the mammalian olfaction process.
However, his main interests
in Dresden have been novel
semiconductor systems like semiconducting
organic thin films; with special emphasis to understand basics device principles and the optical response.
Her research experience includes modeling of
organic aerosol oxidation at LBNL, fabrication and optimization of high performance
semiconductor nanoparticle - based image sensors as Manager of Materials Development at InVisage Technologies, Inc., and foundational and applied research as a Research Staff Member at IBM's Almaden Research Center on transformations
in dielectrics,
semiconductors, metals, and polymer films.
His research led to the discovery of a liquid crystalline thiophene polymer which has served for over a decade as a benchmark
semiconductor, employed
in fundamental studies of the properties of
organic field effect transistors, demonstrating the feasibility of solution processed
organic polymers, and provided the impetus for advances
in the field.
Both layers
in the new smartwatch screen contain
organic semiconductors.
In 2005 a group of engineers at IMEC, a microelectronics company based in Leuven, Belgium, overcame a major technological hurdle by constructing a diode made of pentacene, an organic compound that has semiconductor propertie
In 2005 a group of engineers at IMEC, a microelectronics company based
in Leuven, Belgium, overcame a major technological hurdle by constructing a diode made of pentacene, an organic compound that has semiconductor propertie
in Leuven, Belgium, overcame a major technological hurdle by constructing a diode made of pentacene, an
organic compound that has
semiconductor properties.
With an entire supply chain
in place, OTFT manufacturing has now reached a tipping point
in performance with leading
organic semiconductor (OSC) materials suppliers, including Merck whose OSC material was used
in the demonstration, now showing mobilities required to drive OLED displays.
Mike says that today's commercially available
organic semiconductors have a mobility performance
in the range of 1 - 5 cm2 / Vs, which is enough to drive a wide range of AMOLED displays.
The success of this effort relies on new or improved processing techniques and materials for plastic electronics, including methods for (i) rubber stamping (microcontact printing) high - resolution (≈ 1 μm) circuits with low levels of defects and good registration over large areas, (ii) achieving low leakage with thin dielectrics deposited onto surfaces with relief, (iii) constructing high - performance
organic transistors with bottom contact geometries, (iv) encapsulating these transistors, (v) depositing,
in a repeatable way,
organic semiconductors with uniform electrical characteristics over large areas, and (vi) low - temperature (≈ 100 °C) annealing to increase the on / off ratios of the transistors and to improve the uniformity of their characteristics.
It shows,
in particular, how rubber - stamped circuit elements can be combined with
organic semiconductors to form active matrix backplanes for large sheets of electronic paper.
A high mobility
semiconductor is required for the pixel electronics
in an OLED display, and making this layer
organic (as well as the emitter materials) is the real breakthrough as it fully enables the flexibility and industrial benefits of OLED displays.
To examine the role that boundary alignment plays, the paper's lead author, graduate student Jonathan Rivnay, grew crystals of an
organic semiconductor called PDI8 - CN2, synthesized at Northwestern University and Polyera Corp., an
organic electronics company, using a process that ensures consistent alignment from crystal to crystal
in a particular direction.
«We have succeeded
in integrating
organic semiconductors into various innovative products and working with partners outside Europe, who are also leaders
in this field,» explains Dr. Dominik Gronarz, CEO of the OES innovation group.
Chemical engineers
in the solar industry typically focus on
semiconductors or
organic chemistry, since most solar panels are made of semiconducting materials and some newer thin - film panels are made out of
organic materials.
The researchers report
in Nano Letters that by combining inorganic
semiconductor nanocrystals with
organic molecules, they have succeeded
in «upconverting» photons
in the visible and near - infrared regions of the solar spectrum.
Handled patent prosecution
in diverse fields of technology inclusive of
organic electroluminescent
semiconductors and superconductivity.
In particular, her technical areas include nanofabrication,
semiconductors,
organic electronics, molecular electronics, optoelectronics, electrophotography, inkjet printing, surface engineering, color science, and image processing.