In the paper published in Nature Energy, the researchers described how
they used organic semiconductors — contorted hexabenzocoronene (cHBC) derivatives — for constructing the solar cells.
A cheaper approach involves
using organic semiconductors — basically, plastics that conduct electricity — to make solar cells, Chan says.
Not exact matches
Fujifilm Corporation and nano - electronics research institute imec have demonstrated full - color
organic light - emitting diodes (OLED) by
using their jointly - developed photoresist technology for
organic semiconductors, a technology...
The technique could be
used as a detection sensor for hydrogen or oxygen gases as well as for property controls of
organic semiconductors and
organic light emitting diodes (OLEDs).
For example,
organic semiconductors could be made to change their electrical properties, and OLEDs could show on / off switching characteristics by
using the energy from gas that is supplied to it.
To construct the solar cell, the
semiconductor molecules are deposited as thin films on glass with the same production methods
used by
organic light - emitting diode manufacturers.
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.
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.
Justin Johnson, also a senior scientist at NREL, said the process is similar to MEG, except that it
uses organic molecules — compounds made from carbon — instead of
semiconductors.
One important class of
organic solar cells
uses dyes applied to a
semiconductor material like titanium dioxide (TiO2), for example.
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.
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.
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.
This is not the first flexible ePaper display Sony's showcased, the company prototyping a while ago 4.8 - inch e-paper device with
organic TFTs (thin - film transistors) that
use the «PXX,» an
organic semiconductor material stable to oxygen, moisture and light.
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.
Often building on screen -
used props, special effects castoffs and other materials integral to cinematic production, her protean objects function as
organic semiconductors that mediate encounters between spectator and object, fictional histories and lived experiences.